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.

A240879 Self-convolution of Sum(binomial(2*n, i), i=0..n).

Table of values

n a(n)
0 1
1 6
2 31
3 150
4 699
5 3178
6 14198
7 62604
8 273235
9 1182786
10 5085666
11 21743956
12 92522206
13 392066340
14 1655432524
15 6967724312
16 29245179267
17 122442487474
18 511487386730
19 2132341655556
20 8873167793578
21 36861311739308
22 152895342950196
23 633290273209000
24 2619653638855214
25 10823294835350388

List of values

[1, 6, 31, 150, 699, 3178, 14198, 62604, 273235, 1182786, 5085666, 21743956, 92522206, 392066340, 1655432524, 6967724312, 29245179267, 122442487474, 511487386730, 2132341655556, 8873167793578, 36861311739308, 152895342950196, 633290273209000, 2619653638855214, 10823294835350388]

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

Content is available under The OEIS End-User License Agreement.