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.

A334154 a(n) is the number of length n decorated permutations avoiding the pattern 012.

Table of values

n a(n)
0 1
1 2
2 5
3 15
4 54
5 236
6 1254
7 7986
8 59584
9 509304
10 4897272
11 52237448
12 611460432
13 7787383488
14 107155194928
15 1583776282704
16 25019083516416
17 420609003810944
18 7496930998018176
19 141203784944996736
20 2802115237399913728
21 58432523737192745472
22 1277372108617847278848

List of values

[1, 2, 5, 15, 54, 236, 1254, 7986, 59584, 509304, 4897272, 52237448, 611460432, 7787383488, 107155194928, 1583776282704, 25019083516416, 420609003810944, 7496930998018176, 141203784944996736, 2802115237399913728, 58432523737192745472, 1277372108617847278848]

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

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