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.

A174073 Number of permutations of length n without modular consecutive triples i,i+2,i+4.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 24
5 100
6 594
7 4389
8 35744
9 325395
10 3288600
11 36489992
12 441091944
13 5770007009
14 81213883898
15 1223895060315
16 19662509172096
17 335472890422812
18 6057979283966814
19 115434096553014565
20 2314691409661484600
21 48723117262650147387
22 1074208020519754180896
23 24755214452825129257168

List of values

[1, 1, 2, 3, 24, 100, 594, 4389, 35744, 325395, 3288600, 36489992, 441091944, 5770007009, 81213883898, 1223895060315, 19662509172096, 335472890422812, 6057979283966814, 115434096553014565, 2314691409661484600, 48723117262650147387, 1074208020519754180896, 24755214452825129257168]

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

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