cp's OEIS Frontend

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.

A098569 Row sums of the triangle of triangular binomial coefficients given by A098568.

Table of values

n a(n)
0 1
1 2
2 5
3 14
4 43
5 143
6 510
7 1936
8 7775
9 32869
10 145665
11 674338
12 3251208
13 16282580
14 84512702
15 453697993
16 2514668492
17 14367066833
18 84489482201
19 510760424832
20 3170267071640
21 20182121448815
22 131642848217536
23 878999194493046
24 6003048930287115
25 41899203336942661

List of values

[1, 2, 5, 14, 43, 143, 510, 1936, 7775, 32869, 145665, 674338, 3251208, 16282580, 84512702, 453697993, 2514668492, 14367066833, 84489482201, 510760424832, 3170267071640, 20182121448815, 131642848217536, 878999194493046, 6003048930287115, 41899203336942661]