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.

A201385 Irregular triangle T(n,k) (n >= 1, k >= 1) read by rows: T(n,1) = 2^n - 1; for k>1, T(n,k) = 0 for n <= 2*(k-1); otherwise T(n+1,k) = T(n,k-1) + T(n,k).

Table of values

n a(n)
1 1
2 3
3 7
4 3
5 15
6 10
7 31
8 25
9 10
10 63
11 56
12 35
13 127
14 119
15 91
16 35
17 255
18 246
19 210
20 126
21 511
22 501
23 456
24 336
25 126
26 1023
27 1012
28 957
29 792
30 462
31 2047
32 2035
33 1969
34 1749
35 1254
36 462
37 4095
38 4082
39 4004
40 3718
41 3003
42 1716
43 8191
44 8177
45 8086
46 7722
47 6721
48 4719
49 1716

List of values

[1, 3, 7, 3, 15, 10, 31, 25, 10, 63, 56, 35, 127, 119, 91, 35, 255, 246, 210, 126, 511, 501, 456, 336, 126, 1023, 1012, 957, 792, 462, 2047, 2035, 1969, 1749, 1254, 462, 4095, 4082, 4004, 3718, 3003, 1716, 8191, 8177, 8086, 7722, 6721, 4719, 1716]