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Search: id:A144041
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| A144041 |
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Shifts left when Euler transform applied 9 times. |
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+0
2
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| 0, 1, 1, 10, 64, 529, 4270, 37078, 328765, 2997844, 27840748, 262746590, 2511753957, 24274552279, 236771528856, 2327857190814, 23045073461778, 229523320443974, 2298252776303916, 23122596000124215, 233629865440550370
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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N. J. A. Sloane, Transforms
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MAPLE
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k:=9: with (numtheory): etr:= proc(p) local b; b:=proc(n) option remember; local d, j; if n=0 then 1 else add (add (d*p(d), d=divisors(j)) *b(n-j), j=1..n)/n fi end end: a:='a': b[1]:=etr(a): for t from 2 to k do b[t]:= etr(b[t-1]) od: a:= n-> `if`(n<2, n, b[k](n-1)): seq (a(n), n=0..30);
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CROSSREFS
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9th column of A144042.
Sequence in context: A055855 A061183 A155618 this_sequence A033863 A033908 A058920
Adjacent sequences: A144038 A144039 A144040 this_sequence A144042 A144043 A144044
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KEYWORD
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eigen,nonn
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AUTHOR
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Alois P. Heinz (heinz(AT)hs-heilbronn.de), Sep 07 2008
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