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.

A131076 Row sums of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.

Table of values

n a(n)
1 1
2 3
3 7
4 15
5 26
6 42
7 64
8 93
9 139
10 231
11 463
12 1092
13 2744
14 6840
15 16384
16 37383
17 81295
18 169119
19 338239
20 654192
21 1232288
22 2280864
23 4194304
24 7761375
25 14635711
26 28384383
27 56768767
28 116566080
29 243472256
30 511907712
31 1073741824
32 2232713343
33 4585959679
34 9292452351

List of values

[1, 3, 7, 15, 26, 42, 64, 93, 139, 231, 463, 1092, 2744, 6840, 16384, 37383, 81295, 169119, 338239, 654192, 1232288, 2280864, 4194304, 7761375, 14635711, 28384383, 56768767, 116566080, 243472256, 511907712, 1073741824, 2232713343, 4585959679, 9292452351]