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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.

A297705 a(n) = Sum_{k=0..n} binomial(n, k)*hypergeom([k - n, n + 1], [k + 2], -4).

Table of values

n a(n)
0 1
1 6
2 56
3 636
4 8036
5 108516
6 1533316
7 22389396
8 335177396
9 5116746276
10 79350018276
11 1246583463156
12 19797057247956
13 317304181980036
14 5126097354722436
15 83384214787592916
16 1364582474360361716
17 22450780862515853796
18 371129420131691349796
19 6161232472210183370676

List of values

[1, 6, 56, 636, 8036, 108516, 1533316, 22389396, 335177396, 5116746276, 79350018276, 1246583463156, 19797057247956, 317304181980036, 5126097354722436, 83384214787592916, 1364582474360361716, 22450780862515853796, 371129420131691349796, 6161232472210183370676]

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

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