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.

A015532 a(n) = 4*a(n-1) + 7*a(n-2).

Table of values

n a(n)
0 0
1 1
2 4
3 23
4 120
5 641
6 3404
7 18103
8 96240
9 511681
10 2720404
11 14463383
12 76896360
13 408829121
14 2173591004
15 11556167863
16 61439808480
17 326652408961
18 1736688295204
19 9233320043543
20 49090098240600
21 260993633267201
22 1387605220753004
23 7377376315882423

List of values

[0, 1, 4, 23, 120, 641, 3404, 18103, 96240, 511681, 2720404, 14463383, 76896360, 408829121, 2173591004, 11556167863, 61439808480, 326652408961, 1736688295204, 9233320043543, 49090098240600, 260993633267201, 1387605220753004, 7377376315882423]

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

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