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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.

A136425 a(n) = floor((x^n-(1-x)^n)/sqrt(7)+1/2) where x = (sqrt(7)+1)/2.

Table of values

n a(n)
1 1
2 1
3 3
4 4
5 8
6 14
7 25
8 46
9 84
10 153
11 279
12 509
13 927
14 1691
15 3082
16 5618
17 10241
18 18667
19 34028
20 62029
21 113070
22 206113
23 375719
24 684889
25 1248467
26 2275800
27 4148501
28 7562201
29 13784953
30 25128255
31 45805684
32 83498067
33 152206593
34 277453693
35 505763582

List of values

[1, 1, 3, 4, 8, 14, 25, 46, 84, 153, 279, 509, 927, 1691, 3082, 5618, 10241, 18667, 34028, 62029, 113070, 206113, 375719, 684889, 1248467, 2275800, 4148501, 7562201, 13784953, 25128255, 45805684, 83498067, 152206593, 277453693, 505763582]

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

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