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A174995
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Products of decimal digits.
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1
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 54, 56, 63, 64, 72, 81
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OFFSET
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1,3
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COMMENTS
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Apart from the initial zero: finite subset of A002473 with 37 elements: a(37)=81=9*9;
a(n) = A079904(j,i) for certain i,j with 0<=i<=j<=9.
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LINKS
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MATHEMATICA
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Union[Times@@@Tuples[Range[0, 9], 2]] (* Harvey P. Dale, Oct 08 2011 *)
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CROSSREFS
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KEYWORD
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base,fini,full,nonn
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AUTHOR
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STATUS
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approved
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