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.

A328433 Number of inversion sequences of length n avoiding the consecutive patterns 011 and 012.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 11
5 37
6 157
7 791
8 4676
9 31490
10 238814
11 2009074
12 18585645
13 187366675
14 2045016693
15 24018394333
16 302051731428
17 4049206907012
18 57642586053512
19 868375941780450
20 13801973373609889
21 230808858283551859
22 4051069379668626948
23 74459335679007458268

List of values

[1, 1, 2, 4, 11, 37, 157, 791, 4676, 31490, 238814, 2009074, 18585645, 187366675, 2045016693, 24018394333, 302051731428, 4049206907012, 57642586053512, 868375941780450, 13801973373609889, 230808858283551859, 4051069379668626948, 74459335679007458268]

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

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