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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.

A346649 a(n) = Sum_{k=0..n} binomial(n,k) * binomial(7*k,k) / (6*k + 1).

Table of values

n a(n)
0 1
1 2
2 10
3 95
4 1146
5 15343
6 218407
7 3241316
8 49588850
9 776483636
10 12383420161
11 200444399493
12 3284531747403
13 54378741581471
14 908238222519566
15 15284835717461020
16 258933935458506210
17 4412025177612412048
18 75564998345532498844
19 1300158755391113561288

List of values

[1, 2, 10, 95, 1146, 15343, 218407, 3241316, 49588850, 776483636, 12383420161, 200444399493, 3284531747403, 54378741581471, 908238222519566, 15284835717461020, 258933935458506210, 4412025177612412048, 75564998345532498844, 1300158755391113561288]

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

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