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.

A194778 T(n,k)=Number of lower triangles of an (n+2k-2)X(n+2k-2) 0..k array with new values introduced in row major order 0..k and no element unequal to more than one horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 7
3 3
4 43
5 17
6 6
7 268
8 105
9 41
10 12
11 1740
12 672
13 265
14 95
15 23
16 11862
17 4490
18 1736
19 655
20 219
21 43
22 85013
23 31466
24 11857
25 4464
26 1641
27 493
28 79
29 639760
30 231445
31 85007
32 31429
33 11686
34 4069
35 1101
36 143
37 5045610
38 1784788
39 639753
40 231395
41 84727
42 30608
43 10121
44 2427
45 256

List of values

[1, 7, 3, 43, 17, 6, 268, 105, 41, 12, 1740, 672, 265, 95, 23, 11862, 4490, 1736, 655, 219, 43, 85013, 31466, 11857, 4464, 1641, 493, 79, 639760, 231445, 85007, 31429, 11686, 4069, 1101, 143, 5045610, 1784788, 639753, 231395, 84727, 30608, 10121, 2427, 256]