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.

A005604 a(n) = a(n-1)! + a(n-2)!.

Original entry on oeis.org

1, 1, 2, 3, 8, 40326
Offset: 0

Views

Author

N. J. A. Sloane

Keywords

Comments

The next term has 168215 decimal digits. - Rick L. Shepherd, Nov 04 2004

Crossrefs

A114020 is an essentially identical sequence.

Programs

  • Mathematica
    nxt[{a_,b_}]:={b,a!+b!}; NestList[nxt,{1,1},5][[All,1]] (* Harvey P. Dale, Aug 12 2020 *)

A114045 a(n) = n*a(n-1)! with a(0) = 0, a(1) = 1.

Original entry on oeis.org

0, 1, 2, 6, 2880
Offset: 0

Views

Author

Parthasarathy Nambi, Feb 01 2006

Keywords

Comments

The next term is too large to include.

Examples

			If n=4, then a(4) = 4*a(3)! = 4*6! = 2880.

Crossrefs

Cf. A114020, A000045.
Showing 1-2 of 2 results.

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

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