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.

A178619 Triangle T(n,k) with the coefficient of [x^k] of the series (1-x)^(n+1)* sum_{j>=0} binomial(n + 4*j, 4*j)*x^j in row n, column k.

Table of values

n a(n)
0 1
1 1
2 3
3 1
4 12
5 3
6 1
7 31
8 31
9 1
10 1
11 65
12 155
13 35
14 1
15 120
16 546
17 336
18 21
19 1
20 203
21 1554
22 1918
23 413
24 7
25 1
26 322
27 3823
28 8092
29 3823
30 322
31 1
32 1
33 486
34 8451
35 27876
36 23607
37 4950
38 165
39 1
40 705
41 17205
42 82885
43 112035
44 44803
45 4455
46 55
47 1
48 990
49 32802
50 220198
51 440484
52 291258

List of values

[1, 1, 3, 1, 12, 3, 1, 31, 31, 1, 1, 65, 155, 35, 1, 120, 546, 336, 21, 1, 203, 1554, 1918, 413, 7, 1, 322, 3823, 8092, 3823, 322, 1, 1, 486, 8451, 27876, 23607, 4950, 165, 1, 705, 17205, 82885, 112035, 44803, 4455, 55, 1, 990, 32802, 220198, 440484, 291258]