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.

A286630 a(0) = 1; for n >= 1, a(n) = A000040(n) * A002110(n).

Table of values

n a(n)
0 1
1 4
2 18
3 150
4 1470
5 25410
6 390390
7 8678670
8 184294110
9 5131136010
10 187621103670
11 6217375194030
12 274567310987970
13 12474260804615610
14 562558737261811290
15 28899819781659096270
16 1727225399291072370690
17 113442860659098545705130
18 7154591262923825229979470
19 526507543922377892743899030
20 39613798938995626228686492690

List of values

[1, 4, 18, 150, 1470, 25410, 390390, 8678670, 184294110, 5131136010, 187621103670, 6217375194030, 274567310987970, 12474260804615610, 562558737261811290, 28899819781659096270, 1727225399291072370690, 113442860659098545705130, 7154591262923825229979470, 526507543922377892743899030, 39613798938995626228686492690]

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

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