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.

A385840 a(n) = 1 + Sum_{k=0..n-1} k^2 * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 101
5 1733
6 45303
7 1680907
8 84166419
9 5475072843
10 449157456364
11 45377436182152
12 5537042709272831
13 802969519178558759
14 136516626968319610486
15 26895468447194766859402
16 6078661245454015521843883
17 1562271796018872884111521763
18 453071380100390505646644605866

List of values

[1, 1, 2, 10, 101, 1733, 45303, 1680907, 84166419, 5475072843, 449157456364, 45377436182152, 5537042709272831, 802969519178558759, 136516626968319610486, 26895468447194766859402, 6078661245454015521843883, 1562271796018872884111521763, 453071380100390505646644605866]

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

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