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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.

A346650 a(n) = Sum_{k=0..n} binomial(n,k) * binomial(8*k,k) / (7*k + 1).

Table of values

n a(n)
0 1
1 2
2 11
3 120
4 1661
5 25484
6 415619
7 7066670
8 123865313
9 2222178999
10 40604688117
11 753051711707
12 14138552326609
13 268204210248763
14 5132686807360949
15 98973130183436759
16 1921142366704203305
17 37508070639707177792
18 736080632477073862271
19 14511777729474947626918

List of values

[1, 2, 11, 120, 1661, 25484, 415619, 7066670, 123865313, 2222178999, 40604688117, 753051711707, 14138552326609, 268204210248763, 5132686807360949, 98973130183436759, 1921142366704203305, 37508070639707177792, 736080632477073862271, 14511777729474947626918]

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

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