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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.

A356696 a(n) = Fibonacci(2n-1) - 2^n + binomial(n,2) + 2.

Table of values

n a(n)
0 2
1 1
2 1
3 2
4 5
5 14
6 42
7 128
8 384
9 1123
10 3204
11 8955
12 24629
13 66913
14 180127
15 481568
16 1280855
17 3393644
18 8965476
19 23633702
20 62197602
21 163483201
22 429300366
23 1126514817
24 2954438135
25 7745187919
26 20297902537
27 53182073798
28 139315427369
29 364898425658
30 955648284654

List of values

[2, 1, 1, 2, 5, 14, 42, 128, 384, 1123, 3204, 8955, 24629, 66913, 180127, 481568, 1280855, 3393644, 8965476, 23633702, 62197602, 163483201, 429300366, 1126514817, 2954438135, 7745187919, 20297902537, 53182073798, 139315427369, 364898425658, 955648284654]

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

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