A172971 - cp's OEIS frontend

A172971 Triangle T(n, k) = c(n) - c(k) - c(n-k), where c(n) = Product_{j=0..n} Partitions(j), read by rows.

n	a(n)
0	-1
1	-1
2	-1
3	-1
4	-1
5	-1
6	-1
7	0
8	0
9	-1
10	-1
11	1
12	2
13	1
14	-1
15	-1
16	7
17	9
18	9
19	7
20	-1
21	-1
22	35
23	43
24	44
25	43
26	35
27	-1
28	-1
29	191
30	227
31	234
32	234
33	227
34	191
35	-1
36	-1
37	1199
38	1391
39	1426
40	1432
41	1426
42	1391
43	1199
44	-1
45	-1
46	10079
47	11279
48	11470
49	11504
50	11504
51	11470
52	11279
53	10079
54	-1

[-1, -1, -1, -1, -1, -1, -1, 0, 0, -1, -1, 1, 2, 1, -1, -1, 7, 9, 9, 7, -1, -1, 35, 43, 44, 43, 35, -1, -1, 191, 227, 234, 234, 227, 191, -1, -1, 1199, 1391, 1426, 1432, 1426, 1391, 1199, -1, -1, 10079, 11279, 11470, 11504, 11504, 11470, 11279, 10079, -1]

cp's OEIS Frontend

A172971 Triangle T(n, k) = c(n) - c(k) - c(n-k), where c(n) = Product_{j=0..n} Partitions(j), read by rows.

Table of values

List of values