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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.

A289974 p-INVERT of the upper Wythoff sequence (A001950), where p(S) = 1 - S.

Table of values

n a(n)
0 2
1 9
2 35
3 139
4 549
5 2169
6 8571
7 33866
8 133817
9 528755
10 2089288
11 8255476
12 32620147
13 128893113
14 509299806
15 2012413902
16 7951720511
17 31419907712
18 124150565816
19 490560415825
20 1938368302977
21 7659141579267
22 30263830481105
23 119582517950630
24 472510530626342

List of values

[2, 9, 35, 139, 549, 2169, 8571, 33866, 133817, 528755, 2089288, 8255476, 32620147, 128893113, 509299806, 2012413902, 7951720511, 31419907712, 124150565816, 490560415825, 1938368302977, 7659141579267, 30263830481105, 119582517950630, 472510530626342]

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

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