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.

A343751 A(n,k) is the sum of all compositions [c_1, c_2, ..., c_k] of n into k nonnegative parts encoded as Product_{i=1..k} prime(i)^(c_i); square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 2
5 0
6 1
7 5
8 4
9 0
10 1
11 10
12 19
13 8
14 0
15 1
16 17
17 69
18 65
19 16
20 0
21 1
22 28
23 188
24 410
25 211
26 32
27 0
28 1
29 41
30 496
31 1726
32 2261
33 665
34 64
35 0
36 1
37 58
38 1029
39 7182
40 14343
41 11970
42 2059
43 128
44 0
45 1
46 77
47 2015
48 20559
49 93345
50 112371
51 61909
52 6305
53 256
54 0
55 1
56 100
57 3478
58 54814
59 360612
60 1139166
61 848506
62 315850
63 19171
64 512
65 0

List of values

[1, 1, 0, 1, 2, 0, 1, 5, 4, 0, 1, 10, 19, 8, 0, 1, 17, 69, 65, 16, 0, 1, 28, 188, 410, 211, 32, 0, 1, 41, 496, 1726, 2261, 665, 64, 0, 1, 58, 1029, 7182, 14343, 11970, 2059, 128, 0, 1, 77, 2015, 20559, 93345, 112371, 61909, 6305, 256, 0, 1, 100, 3478, 54814, 360612, 1139166, 848506, 315850, 19171, 512, 0]