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.

A331811 a(n) is the next number after a(n-1) which cannot be represented in the form 2*a(i) and Sum_{j=1..n-1} b_j*a(j) where 0 < i < n, b_j = 1 or 0. The sequence starts: a(1) = 1; a(2) = 2; a(3) = 3; a(4) = 5.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 12
6 25
7 49
8 73
9 171
10 195
11 512
12 658
13 1560
14 1950
15 4826
16 6142
17 14868
18 18768
19 45920
20 58204
21 141660
22 179196
23 437264
24 553672
25 1349328
26 1707720
27 4164392
28 5271736
29 12851568
30 16267008
31 39662048
32 50205520
33 122401584
34 154935600
35 377748224
36 478159264
37 1165778688
38 1475649888

List of values

[1, 2, 3, 5, 12, 25, 49, 73, 171, 195, 512, 658, 1560, 1950, 4826, 6142, 14868, 18768, 45920, 58204, 141660, 179196, 437264, 553672, 1349328, 1707720, 4164392, 5271736, 12851568, 16267008, 39662048, 50205520, 122401584, 154935600, 377748224, 478159264, 1165778688, 1475649888]