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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.

A333592 a(n) = Sum_{k = 0..n} binomial(n+k-1, k)^2.

Table of values

n a(n)
0 1
1 2
2 14
3 146
4 1742
5 22252
6 296438
7 4063866
8 56884430
9 808970960
10 11649069764
11 169444272692
12 2485268015414
13 36707034407396
14 545386280953262
15 8144809577111146
16 122177689609022670
17 1839933272106181720
18 27804610617723365072
19 421476329309967621504
20 6406685024966332359492

List of values

[1, 2, 14, 146, 1742, 22252, 296438, 4063866, 56884430, 808970960, 11649069764, 169444272692, 2485268015414, 36707034407396, 545386280953262, 8144809577111146, 122177689609022670, 1839933272106181720, 27804610617723365072, 421476329309967621504, 6406685024966332359492]

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

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