|
Search: id:A116078
|
|
| |
|
| 1, 2, 7, 28, 117, 496, 2110, 8968, 38017, 160648, 676626, 2840872, 11892562, 49650368, 206773372, 859186768, 3562780057, 14746127608, 60929182282, 251358948328, 1035479267542, 4260071237728, 17505144024292
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
FORMULA
|
G.f.: A(x) = 1/sqrt(1-4*x) + 4*x^2/(1+sqrt(1-4*x))^2/(1-4*x)^(3/2).
|
|
PROGRAM
|
(PARI) {a(n)=local(X=x+x*O(x^n)); polcoeff(1/sqrt(1-4*X)+4*X^2/(1+sqrt(1-4*X))^2/(1-4*X)^(3/2), n, x)}
|
|
CROSSREFS
|
Cf. A116077.
Sequence in context: A012855 A128611 A061539 this_sequence A090317 A130655 A005436
Adjacent sequences: A116075 A116076 A116077 this_sequence A116079 A116080 A116081
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Paul D. Hanna (pauldhanna(AT)juno.com), Feb 04 2006
|
|
|
Search completed in 0.002 seconds
|
