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.

A023424 Expansion of (1+2*x+3*x^2+4*x^3+5*x^4)/(1-x-x^2-x^3-x^4-x^5).

Table of values

n a(n)
0 1
1 3
2 7
3 15
4 31
5 57
6 113
7 223
8 439
9 863
10 1695
11 3333
12 6553
13 12883
14 25327
15 49791
16 97887
17 192441
18 378329
19 743775
20 1462223
21 2874655
22 5651423
23 11110405
24 21842481
25 42941187
26 84420151
27 165965647
28 326279871
29 641449337
30 1261056193
31 2479171199
32 4873922247
33 9581878847

List of values

[1, 3, 7, 15, 31, 57, 113, 223, 439, 863, 1695, 3333, 6553, 12883, 25327, 49791, 97887, 192441, 378329, 743775, 1462223, 2874655, 5651423, 11110405, 21842481, 42941187, 84420151, 165965647, 326279871, 641449337, 1261056193, 2479171199, 4873922247, 9581878847]

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

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