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A080780
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a(1)=2; for n > 1, a(n) is the smallest integer greater than a(n-1) consistent with the condition "n is in the sequence if and only if a(n) is congruent to 0 (mod 6)".
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0
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2, 6, 7, 8, 9, 12, 18, 24, 30, 31, 32, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 60, 66, 67, 68, 69, 72, 78, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150
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OFFSET
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1,1
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REFERENCES
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J.-P. Allouche, N. Rampersad and J. Shallit, On integer sequences whose first iterates are linear, Aequationes Math. 69 (2005), 114-127
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Benoit Cloitre, Feb 23 2003
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STATUS
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approved
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