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.

A001280 Number of permutations of length n by rises.

Table of values

n a(n)
8 11
9 309
10 5805
11 95575
12 1516785
13 24206055
14 396475975
15 6733084365
16 119143997490
17 2201649739310
18 42514526708766
19 857750898213594
20 18068801884373310
21 397038791150060850
22 9090755207499817170
23 216635190303090215910

List of values

[11, 309, 5805, 95575, 1516785, 24206055, 396475975, 6733084365, 119143997490, 2201649739310, 42514526708766, 857750898213594, 18068801884373310, 397038791150060850, 9090755207499817170, 216635190303090215910]

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

Content is available under The OEIS End-User License Agreement.