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.

A330246 a(n) = 4^(n+1) + (4^n-1)/3.

Table of values

n a(n)
0 4
1 17
2 69
3 277
4 1109
5 4437
6 17749
7 70997
8 283989
9 1135957
10 4543829
11 18175317
12 72701269
13 290805077
14 1163220309
15 4652881237
16 18611524949
17 74446099797
18 297784399189
19 1191137596757
20 4764550387029
21 19058201548117
22 76232806192469
23 304931224769877
24 1219724899079509

List of values

[4, 17, 69, 277, 1109, 4437, 17749, 70997, 283989, 1135957, 4543829, 18175317, 72701269, 290805077, 1163220309, 4652881237, 18611524949, 74446099797, 297784399189, 1191137596757, 4764550387029, 19058201548117, 76232806192469, 304931224769877, 1219724899079509]

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

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