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A144038
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Shifts left when Euler transform applied 6 times.
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1
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0, 1, 1, 7, 34, 209, 1260, 8219, 54677, 374904, 2617996, 18588586, 133708072, 972484206, 7139186644, 52832157095, 393700752053, 2951755132720, 22250074031893, 168524281244364, 1281906305775734, 9788771511218660
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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LINKS
| N. J. A. Sloane, Transforms
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MAPLE
| k:=6: 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
| 6th column of A144042.
Sequence in context: A177140 A027233 A117650 * A027842 A027683 A196968
Adjacent sequences: A144035 A144036 A144037 * A144039 A144040 A144041
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KEYWORD
| eigen,nonn
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AUTHOR
| Alois P. Heinz (heinz(AT)hs-heilbronn.de), Sep 07 2008
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