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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.

A188202 Central coefficients in (1 + 2^n*x + x^2)^n.

Table of values

n a(n)
0 1
1 2
2 18
3 560
4 68614
5 34210752
6 69223161876
7 564393502852608
8 18462508476328312902
9 2418515748615522678533120
10 1267759405004680431879193624828
11 2658525712652053771685500828954042368

List of values

[1, 2, 18, 560, 68614, 34210752, 69223161876, 564393502852608, 18462508476328312902, 2418515748615522678533120, 1267759405004680431879193624828, 2658525712652053771685500828954042368]

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

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