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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.

A383928 Expansion of g.f. cosh(9*arctanh(4*sqrt(x))).

Table of values

n a(n)
0 1
1 648
2 76896
3 4601088
4 194102784
5 6662320128
6 199818854400
7 5451206492160
8 138644854013952
9 3341194489757696
10 77151510667984896
11 1720777996555517952
12 37293854107184922624
13 788969931176505507840
14 16350749459194860011520
15 332885987884833366343680
16 6673058165121160335851520

List of values

[1, 648, 76896, 4601088, 194102784, 6662320128, 199818854400, 5451206492160, 138644854013952, 3341194489757696, 77151510667984896, 1720777996555517952, 37293854107184922624, 788969931176505507840, 16350749459194860011520, 332885987884833366343680, 6673058165121160335851520]

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

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