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.

A254030 a(n) = 1*4^n + 2*3^n + 3*2^n + 4*1^n.

Table of values

n a(n)
0 10
1 20
2 50
3 146
4 470
5 1610
6 5750
7 21146
8 79430
9 303050
10 1169750
11 4554746
12 17852390
13 70322090
14 278050550
15 1102537946
16 4381257350
17 17438542730
18 69495104150
19 277204002746
20 1106488342310
21 4418973508970
22 17654960746550

List of values

[10, 20, 50, 146, 470, 1610, 5750, 21146, 79430, 303050, 1169750, 4554746, 17852390, 70322090, 278050550, 1102537946, 4381257350, 17438542730, 69495104150, 277204002746, 1106488342310, 4418973508970, 17654960746550]

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

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