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.

A226434 The number of sum decomposable permutations which avoid the patterns 3124 and 4312.

Table of values

n a(n)
1 0
2 1
3 3
4 10
5 37
6 146
7 595
8 2456
9 10167
10 42027
11 173201
12 711397
13 2912633
14 11891030
15 48425597
16 196790382
17 798251109
18 3232928429
19 13075849791
20 52825304031
21 213196622183
22 859690304703
23 3463979709111
24 13948292729231
25 56132430446203
26 225778880966297
27 907726113188331
28 3647961305524521
29 14655086058873287
30 58855311286307572

List of values

[0, 1, 3, 10, 37, 146, 595, 2456, 10167, 42027, 173201, 711397, 2912633, 11891030, 48425597, 196790382, 798251109, 3232928429, 13075849791, 52825304031, 213196622183, 859690304703, 3463979709111, 13948292729231, 56132430446203, 225778880966297, 907726113188331, 3647961305524521, 14655086058873287, 58855311286307572]

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

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