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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.

A289847 p-INVERT of the primes (A000040), where p(S) = 1 - S - S^2.

Table of values

n a(n)
0 2
1 11
2 53
3 253
4 1205
5 5740
6 27336
7 130200
8 620129
9 2953634
10 14067934
11 67004505
12 319137367
13 1520027050
14 7239773429
15 34482491204
16 164237487721
17 782250685197
18 3725800625523
19 17745705518523
20 84521448139914
21 402569240665810
22 1917406730442806
23 9132462688572345

List of values

[2, 11, 53, 253, 1205, 5740, 27336, 130200, 620129, 2953634, 14067934, 67004505, 319137367, 1520027050, 7239773429, 34482491204, 164237487721, 782250685197, 3725800625523, 17745705518523, 84521448139914, 402569240665810, 1917406730442806, 9132462688572345]

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

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