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.

A355109 a(n) = 1 + Sum_{k=1..n-1} binomial(n-1,k) * 2^(k-1) * a(k).

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 44
5 493
6 9974
7 372403
8 26247008
9 3559692121
10 942403603562
11 491777568765151
12 508938530329020692
13 1048381120745440503877
14 4307758467916752367544414
15 35349370769806113877653011083
16 579693879415731511179957972407624

List of values

[1, 1, 2, 7, 44, 493, 9974, 372403, 26247008, 3559692121, 942403603562, 491777568765151, 508938530329020692, 1048381120745440503877, 4307758467916752367544414, 35349370769806113877653011083, 579693879415731511179957972407624]