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.

A218653 E.g.f. satisfies: A(x) = 1 + log(1 + x^2*A(x)^2)/x.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 264
5 3400
6 54480
7 1045800
8 23412480
9 599157216
10 17258814720
11 552733695360
12 19485393903360
13 749871707270400
14 31283408387911680
15 1406370859616923200
16 67780975948945459200
17 3486485719168394342400
18 190644828634476331315200
19 11043310871932837194977280

List of values

[1, 1, 4, 27, 264, 3400, 54480, 1045800, 23412480, 599157216, 17258814720, 552733695360, 19485393903360, 749871707270400, 31283408387911680, 1406370859616923200, 67780975948945459200, 3486485719168394342400, 190644828634476331315200, 11043310871932837194977280]

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

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