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.

A292168 Number of permutations p of [n] such that 0p has a nonincreasing jump sequence beginning with two.

Table of values

n a(n)
2 1
3 2
4 5
5 9
6 17
7 31
8 57
9 101
10 185
11 333
12 599
13 1089
14 1975
15 3563
16 6505
17 11829
18 21455
19 39257
20 71641
21 130403
22 239193
23 437677
24 799127
25 1468777
26 2693853
27 4930871
28 9079127
29 16684737
30 30605159
31 56441227
32 103900161
33 190934999
34 352606721
35 650072239
36 1196527319
37 2212404279

List of values

[1, 2, 5, 9, 17, 31, 57, 101, 185, 333, 599, 1089, 1975, 3563, 6505, 11829, 21455, 39257, 71641, 130403, 239193, 437677, 799127, 1468777, 2693853, 4930871, 9079127, 16684737, 30605159, 56441227, 103900161, 190934999, 352606721, 650072239, 1196527319, 2212404279]

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

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