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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.

A048987 Number of possible chess games at the end of the n-th ply.

Table of values

n a(n)
0 1
1 20
2 400
3 8902
4 197281
5 4865609
6 119060324
7 3195901860
8 84998978956
9 2439530234167
10 69352859712417
11 2097651003696806
12 62854969236701747
13 1981066775000396239
14 61885021521585529237
15 2015099950053364471960

List of values

[1, 20, 400, 8902, 197281, 4865609, 119060324, 3195901860, 84998978956, 2439530234167, 69352859712417, 2097651003696806, 62854969236701747, 1981066775000396239, 61885021521585529237, 2015099950053364471960]

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

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