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.

A265612 a(n) = CatalanNumber(n+1)*n*(1+3*n)/(6+2*n).

Table of values

n a(n)
0 0
1 1
2 7
3 35
4 156
5 660
6 2717
7 11011
8 44200
9 176358
10 700910
11 2778446
12 10994920
13 43459650
14 171655785
15 677688675
16 2674776720
17 10555815270
18 41656918050
19 164401379610
20 648887951400
21 2561511781920
22 10113397410402
23 39937416869070
24 157743149913776
25 623178050662300

List of values

[0, 1, 7, 35, 156, 660, 2717, 11011, 44200, 176358, 700910, 2778446, 10994920, 43459650, 171655785, 677688675, 2674776720, 10555815270, 41656918050, 164401379610, 648887951400, 2561511781920, 10113397410402, 39937416869070, 157743149913776, 623178050662300]