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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.

A301363 G.f. A(x) satisfies: A(x) = 1/(1 - x*A(x)/(1 - 2*x*A(x)/(1 - 3*x*A(x)/(1 - 4*x*A(x)/(1 - ...))))), a continued fraction.

Table of values

n a(n)
0 1
1 1
2 4
3 25
4 202
5 1966
6 22306
7 289969
8 4272934
9 70792318
10 1308702592
11 26791202362
12 602762346088
13 14795609964448
14 393567982759966
15 11276489767853569
16 346158428070229414
17 11331678979354212886
18 393967314482937530248
19 14495027742943618066030
20 562600190990455844759356

List of values

[1, 1, 4, 25, 202, 1966, 22306, 289969, 4272934, 70792318, 1308702592, 26791202362, 602762346088, 14795609964448, 393567982759966, 11276489767853569, 346158428070229414, 11331678979354212886, 393967314482937530248, 14495027742943618066030, 562600190990455844759356]

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

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