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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.

A158266 G.f.: A(x) = exp( Sum_{n>=1} C(2n-1,n)^2*x^n/n ).

Table of values

n a(n)
0 1
1 1
2 5
3 38
4 352
5 3659
6 41012
7 484739
8 5959417
9 75523708
10 980470867
11 12980840984
12 174675568464
13 2382923659387
14 32890264803521
15 458576476085929
16 6450351908991558
17 91437202854436755
18 1305115286958337403

List of values

[1, 1, 5, 38, 352, 3659, 41012, 484739, 5959417, 75523708, 980470867, 12980840984, 174675568464, 2382923659387, 32890264803521, 458576476085929, 6450351908991558, 91437202854436755, 1305115286958337403]

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

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