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.

A151650 Number of permutations of 5 indistinguishable copies of 1..n with exactly 5 adjacent element pairs in decreasing order.

Table of values

n a(n)
1 0
2 1
3 273504
4 554083761
5 359033166276
6 146006641259682
7 47460662479108620
8 13737399319828223622
9 3735696667164317656002
10 981723633332192745554763
11 253168802147494901125791536
12 64610303181638008483181729583
13 16394452997496205694559810296928

List of values

[0, 1, 273504, 554083761, 359033166276, 146006641259682, 47460662479108620, 13737399319828223622, 3735696667164317656002, 981723633332192745554763, 253168802147494901125791536, 64610303181638008483181729583, 16394452997496205694559810296928]

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

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