|
| |
|
|
A158828
|
|
The 5-th iteration of x*C(x) where C(x) is the Catalan function (A000108).
|
|
4
| |
|
|
1, 5, 30, 195, 1330, 9380, 67844, 500619, 3755156, 28558484, 219767968, 1708590960, 13403300208, 105983648060, 844009565176, 6764300053390, 54525119251104, 441811163402124, 3597005618194848, 29412560840221272
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
PROG
| (PARI) {a(n)=local(F=serreverse(x-x^2+O(x^(n+1))), G=x); for(i=1, 5, G=subst(F, x, G)); polcoeff(G, n)}
|
|
|
CROSSREFS
| Cf. A158825, A158826, A158827, A158829.
Sequence in context: A059273 A038744 A098663 * A196471 A034164 A103433
Adjacent sequences: A158825 A158826 A158827 * A158829 A158830 A158831
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Mar 28 2009
|
| |
|
|
