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 1-3 of 3 results.

A362795 E.g.f. satisfies A(x) = (1+x)^(A(x)^(x^2)).

Original entry on oeis.org

1, 1, 0, 0, 24, 0, -60, 7980, -12992, -23184, 10320480, -54616320, 160009344, 33740939232, -391545030240, 3173349947040, 211401523687680, -4586955333880320, 66611949275370240, 2068372502060292864, -82278329345056212480, 1885659676128917982720
Offset: 0

Views

Author

Seiichi Manyama, May 04 2023

Keywords

Crossrefs

Programs

  • PARI
    my(N=30, x='x+O('x^N)); Vec(serlaplace((1+x)^exp(-lambertw(-x^2*log(1+x)))))

Formula

E.g.f.: exp( -LambertW(-x^2 * log(1+x)) / x^2 ) = (1+x)^exp( -LambertW(-x^2 * log(1+x)) ).
E.g.f.: Sum_{k>=0} (k*x^2 + 1)^(k-1) * (log(1+x))^k / k!.

A362796 E.g.f. satisfies A(x) = 1/(1-x)^(A(x)^x).

Original entry on oeis.org

1, 1, 2, 12, 72, 650, 6480, 80906, 1121512, 18069264, 320204160, 6348340152, 136915211664, 3230148306216, 82078412377416, 2248247450065080, 65771634671679360, 2052879248516927232, 67955959831214467584, 2381716543764159438336
Offset: 0

Views

Author

Seiichi Manyama, May 04 2023

Keywords

Crossrefs

Programs

  • PARI
    my(N=20, x='x+O('x^N)); Vec(serlaplace(1/(1-x)^exp(-lambertw(x*log(1-x)))))

Formula

E.g.f.: exp( -LambertW(x * log(1-x)) / x ) = 1/(1-x)^exp( -LambertW(x * log(1-x)) ).
E.g.f.: Sum_{k>=0} (k*x + 1)^(k-1) * (-log(1-x))^k / k!.

A362799 E.g.f. satisfies A(x) = exp( (exp(x) - 1) * A(x)^x ).

Original entry on oeis.org

1, 1, 2, 11, 63, 542, 5183, 62211, 830252, 12900381, 220566835, 4223662522, 88001471869, 2007052809465, 49309469989666, 1306455781607975, 36973887007453315, 1116728635342926570, 35775769695237122035, 1213704083311914974899
Offset: 0

Views

Author

Seiichi Manyama, May 04 2023

Keywords

Crossrefs

Programs

  • PARI
    my(N=20, x='x+O('x^N)); Vec(serlaplace(exp(-lambertw(-x*(exp(x)-1))/x)))

Formula

E.g.f.: exp( -LambertW(-x * (exp(x) - 1)) / x ).
E.g.f.: Sum_{k>=0} (k*x + 1)^(k-1) * (exp(x) - 1)^k / k!.
Showing 1-3 of 3 results.