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.

A362794 E.g.f. satisfies A(x) = (1+x)^(A(x)^x).

Original entry on oeis.org

1, 1, 0, 6, 0, 170, -120, 12446, -35336, 1832400, -12172320, 469680552, -5524990416, 189586178184, -3321122831208, 111608536026360, -2599887499382400, 90253048158627072, -2595580675897337856, 95720854442948910720, -3237436187047116892800
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*log(1+x)))))

Formula

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

A362800 E.g.f. satisfies A(x) = exp( (exp(x) - 1) * A(x)^(x^2) ).

Original entry on oeis.org

1, 1, 2, 5, 39, 292, 2063, 21877, 271372, 3298155, 47855035, 805112970, 13843621861, 261388560253, 5529798475178, 122059754102345, 2863956966387107, 73150334575839340, 1961833778207602123, 55184622355007805281, 1656027290812446938492
Offset: 0

Views

Author

Seiichi Manyama, May 04 2023

Keywords

Crossrefs

Programs

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

Formula

E.g.f.: exp( -LambertW(-x^2 * (exp(x) - 1)) / x^2 ).
E.g.f.: Sum_{k>=0} (k*x^2 + 1)^(k-1) * (exp(x) - 1)^k / k!.
Showing 1-3 of 3 results.