|
Search: id:A107669
|
|
| |
|
| 1, 1, 5, 51, 809, 17575, 486460, 16384260, 650574249, 29762953831, 1541719486081, 89201504309927, 5702038255950404, 399105271607867940, 30359621863987241460, 2494052823831234355340, 220067051126228849480649
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
PROGRAM
|
(PARI) {a(n)=local(A); if(n==0, n+1, A=(n+1)*x+x*O(x^n); for(k=0, n, A+=polcoeff(A, k)*x^k*(n+1-prod(i=0, k, 1+(i-n-1)*x))); polcoeff(A, n)/(n+1)^2)}
|
|
CROSSREFS
|
Cf. A107667, A107668, A107670.
Sequence in context: A041040 A145162 A095839 this_sequence A077392 A111340 A124559
Adjacent sequences: A107666 A107667 A107668 this_sequence A107670 A107671 A107672
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Paul D. Hanna (pauldhanna(AT)juno.com), Jun 07 2005
|
|
|
Search completed in 0.002 seconds
|
