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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.

A321117 Number of permutations p of [n] such that in 0p the largest up-jump equals ten and no down-jump is larger than 2.

Table of values

n a(n)
10 2126
11 18094
12 138568
13 1004762
14 7065186
15 48767474
16 332656900
17 2251145590
18 15147986104
19 101498413174
20 677767802220
21 4514436576522
22 30014218133762
23 199270720886422
24 1321592750970506
25 8757889640855800
26 58000722621872304
27 383941464541725814
28 2540655228539643752

List of values

[2126, 18094, 138568, 1004762, 7065186, 48767474, 332656900, 2251145590, 15147986104, 101498413174, 677767802220, 4514436576522, 30014218133762, 199270720886422, 1321592750970506, 8757889640855800, 58000722621872304, 383941464541725814, 2540655228539643752]

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

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