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A100974
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Integers that are Rhonda numbers to base 15.
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16
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2392, 2472, 11468, 15873, 17424, 18126, 19152, 20079, 24388, 30758, 31150, 33004, 33550, 37925, 39483, 42550, 44714, 58870, 59605, 66950, 70182, 71485, 71709, 85557, 85848, 86241, 86591, 92150, 110334, 112671, 113300, 116270, 120414
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OFFSET
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1,1
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COMMENTS
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See A099542 for definition of Rhonda numbers and for some links.
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LINKS
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EXAMPLE
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The product of the base 15 digits of 2392 is 10*9*7=630. The sum of the prime factors of 2392 is 3*2+13+23=42 and 630=15*42. So 2392 is a Rhonda number to base 15.
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PROG
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(Haskell)
a100974 n = a100974_list !! (n-1)
a100974_list = filter (rhonda 15) $ iterate z 1 where
z x = 1 + if r < 14 then x else 15 * z x' where (x', r) = divMod x 15
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CROSSREFS
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Cf. Rhonda numbers to other bases: A100968 (base 4), A100969 (base 6), A100970 (base 8), A100973 (base 9), A099542 (base 10), A100971 (base 12), A100972 (base 14), A100975 (base 16), A255735 (base 18), A255732 (base 20), A255736 (base 30), A255731 (base 60).
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KEYWORD
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easy,nonn,base
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AUTHOR
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Mark Hudson (mrmarkhudson(AT)hotmail.com), Nov 25 2004
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STATUS
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approved
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