cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A382333 Expansion of ( 1 + 4 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k)) )^(1/2).

Original entry on oeis.org

1, 2, 2, -2, 8, -10, 6, 26, -108, 258, -342, -194, 2700, -8994, 17830, -12878, -61910, 322110, -860106, 1284546, 571880, -10749654, 38883554, -82867578, 68869212, 286234558, -1619591538, 4559780610, -7250287740, -2206074398, 59250601986, -225063455922
Offset: 0

Views

Author

Seiichi Manyama, Mar 22 2025

Keywords

Crossrefs

Cf. A001511, A382334.
Cf. A223142, A382335.

Formula

G.f. A(x) satisfies A(x) = ( A(x^2)^2 + 4*x/(1-x) )^(1/2).

A382336 Expansion of ( 1 + 9 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k))^2 )^(1/3).

Original entry on oeis.org

1, 3, 0, 0, 21, -111, 504, -2004, 7092, -21150, 43614, 24288, -949878, 7022118, -38308320, 175670820, -691787607, 2250673143, -4994247456, -2841846468, 120496073523, -931900270923, 5282041372722, -25033533979260, 101401747872534, -337523450786736, 757180705527738
Offset: 0

Views

Author

Seiichi Manyama, Mar 22 2025

Keywords

Crossrefs

Cf. A129527, A382335.
Cf. A223143, A382334.

Formula

G.f. A(x) satisfies A(x) = ( A(x^2)^3 + 9*x/(1-x)^2 )^(1/3).
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.