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.

A288912 Number of permutations p of [n] such that 0p has a nonincreasing down-jump sequence.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 23
5 106
6 558
7 3284
8 21200
9 148539
10 1119273
11 9013112
12 77106652
13 697811164
14 6652604804
15 66593158893
16 697756930786
17 7633155361594
18 86969814549075
19 1029939820075074
20 12652809025029242
21 160977119684852369
22 2117642963178349336
23 28763717105362639324

List of values

[1, 1, 2, 6, 23, 106, 558, 3284, 21200, 148539, 1119273, 9013112, 77106652, 697811164, 6652604804, 66593158893, 697756930786, 7633155361594, 86969814549075, 1029939820075074, 12652809025029242, 160977119684852369, 2117642963178349336, 28763717105362639324]

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

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