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.

A331689 E.g.f.: exp(x/(1 - x)) / (1 - 2*x).

Table of values

n a(n)
0 1
1 3
2 15
3 103
4 897
5 9471
6 117703
7 1685475
8 27361953
9 497111707
10 10001175231
11 220849928223
12 5312868439585
13 138337555830423
14 3876986580776247
15 116375171226474331
16 3725295913465848513
17 126686907674290095795
18 4561317309742758852463
19 173343622143918424951767

List of values

[1, 3, 15, 103, 897, 9471, 117703, 1685475, 27361953, 497111707, 10001175231, 220849928223, 5312868439585, 138337555830423, 3876986580776247, 116375171226474331, 3725295913465848513, 126686907674290095795, 4561317309742758852463, 173343622143918424951767]

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

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