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A144367
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Shifts 3 places left under Dirichlet convolution.
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1
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1, 1, 1, 1, 2, 2, 3, 4, 6, 6, 10, 13, 16, 20, 32, 32, 46, 68, 73, 92, 152, 146, 200, 310, 312, 400, 658, 628, 832, 1328, 1302, 1664, 2740, 2604, 3400, 5500, 5300, 6812, 11178, 10600, 13770, 22388, 21412, 27540, 45132, 42824, 55392, 90352, 86048, 110784
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OFFSET
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1,5
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LINKS
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Table of n, a(n) for n=1..50.
N. J. A. Sloane, Transforms
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MAPLE
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k:= 3: with (numtheory): dck:= proc(b, c) proc(n, k) option remember; add (b(d, k) *c(n/d, k), d=`if`(n<0, {}, divisors(n))) end end: B:= dck(T, T): T:= (n, k)-> if n<=k then 1 else B(n-k, k) fi: a:= n-> T(n, k): seq (a(n), n=1..55);
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CROSSREFS
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3rd column of A144374. Cf. A000005.
Sequence in context: A046934 A093594 A008806 * A075465 A011868 A145813
Adjacent sequences: A144364 A144365 A144366 * A144368 A144369 A144370
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KEYWORD
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eigen,nonn
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AUTHOR
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Alois P. Heinz, Sep 18 2008
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STATUS
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approved
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