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A144319 Shifts left when Dirichlet convolution (DC:(b,b)->a) applied 5 times. 1
1, 1, 32, 1024, 33264, 1064448, 34094080, 1091010560, 34913358688, 1117227985920, 35751328547328, 1144042513514496, 36609361521378304, 1171499568684105728, 37487986231712710656, 1199615559415862673408 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
N. J. A. Sloane, Transforms
MAPLE
k:=5: with (numtheory): dc:= proc(b, c) proc(n) option remember; add (b(d) *c(n/d), d=`if`(n<0, {}, divisors(n))) end end: a:='a': b[1]:= dc(a, a): for t from 2 to k do b[t]:= dc(b[t-1], b[t-1]) od: a:= n-> `if`(n=1, 1, b[k](n-1)): seq (a(n), n=1..25);
CROSSREFS
5th column of A144324.
Sequence in context: A227593 A171306 A009976 * A041481 A158685 A265021
KEYWORD
eigen,nonn
AUTHOR
Alois P. Heinz, Sep 17 2008
STATUS
approved

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Last modified February 25 11:04 EST 2024. Contains 370324 sequences. (Running on oeis4.)