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.

A094434 a(n) = rightmost term of M^n * [1 0 0], with M = the 3 X 3 matrix [1 -1 0 / -1 3 -2 / 0 -2 2].

Table of values

n a(n)
1 0
2 2
3 12
4 60
5 288
6 1368
7 6480
8 30672
9 145152
10 686880
11 3250368
12 15380928
13 72783360
14 344414592
15 1629787392
16 7712236800
17 36494696448
18 172694757888
19 817200368640
20 3867033664512
21 18298999775232
22 86591796664320
23 409756781334528

List of values

[0, 2, 12, 60, 288, 1368, 6480, 30672, 145152, 686880, 3250368, 15380928, 72783360, 344414592, 1629787392, 7712236800, 36494696448, 172694757888, 817200368640, 3867033664512, 18298999775232, 86591796664320, 409756781334528]

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

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