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.

A131454 2 up, 2 down, ..., 2 up, 2 down, 2 up permutations of length 4n+3.

Table of values

n a(n)
0 1
1 71
2 45541
3 120686411
4 908138776681
5 15611712012050351
6 531909061958526321421
7 32491881630252866646683891
8 3302814916156503291298772711761
9 527393971346575736206847604137659031
10 126355819963625435928020023737689391659701

List of values

[1, 71, 45541, 120686411, 908138776681, 15611712012050351, 531909061958526321421, 32491881630252866646683891, 3302814916156503291298772711761, 527393971346575736206847604137659031, 126355819963625435928020023737689391659701]

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

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