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.

A308292 A(n,k) = Sum_{i_1=0..n} Sum_{i_2=0..n} ... Sum_{i_k=0..n} multinomial(i_1 + i_2 + ... + i_k; i_1, i_2, ..., i_k), square array A(n,k) read by antidiagonals, for n >= 0, k >= 0.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 5
8 3
9 1
10 1
11 16
12 19
13 4
14 1
15 1
16 65
17 271
18 69
19 5
20 1
21 1
22 326
23 7365
24 5248
25 251
26 6
27 1
28 1
29 1957
30 326011
31 1107697
32 110251
33 923
34 7
35 1
36 1
37 13700
38 21295783
39 492911196
40 191448941
41 2435200
42 3431
43 8
44 1
45 1
46 109601
47 1924223799
48 396643610629
49 904434761801
50 35899051101
51 55621567
52 12869
53 9
54 1

List of values

[1, 1, 1, 1, 2, 1, 1, 5, 3, 1, 1, 16, 19, 4, 1, 1, 65, 271, 69, 5, 1, 1, 326, 7365, 5248, 251, 6, 1, 1, 1957, 326011, 1107697, 110251, 923, 7, 1, 1, 13700, 21295783, 492911196, 191448941, 2435200, 3431, 8, 1, 1, 109601, 1924223799, 396643610629, 904434761801, 35899051101, 55621567, 12869, 9, 1]