A025564 - cp's OEIS frontend

A025564 Triangular array, read by rows: pairwise sums of trinomial array A027907.

n	a(n)
0	1
1	1
2	2
3	1
4	1
5	3
6	4
7	3
8	1
9	1
10	4
11	8
12	10
13	8
14	4
15	1
16	1
17	5
18	13
19	22
20	26
21	22
22	13
23	5
24	1
25	1
26	6
27	19
28	40
29	61
30	70
31	61
32	40
33	19
34	6
35	1
36	1
37	7
38	26
39	65
40	120
41	171
42	192
43	171
44	120
45	65
46	26
47	7
48	1
49	1
50	8
51	34
52	98
53	211
54	356
55	483
56	534
57	483
58	356
59	211
60	98
61	34
62	8
63	1
64	1
65	9
66	43
67	140
68	343
69	665
70	1050
71	1373

[1, 1, 2, 1, 1, 3, 4, 3, 1, 1, 4, 8, 10, 8, 4, 1, 1, 5, 13, 22, 26, 22, 13, 5, 1, 1, 6, 19, 40, 61, 70, 61, 40, 19, 6, 1, 1, 7, 26, 65, 120, 171, 192, 171, 120, 65, 26, 7, 1, 1, 8, 34, 98, 211, 356, 483, 534, 483, 356, 211, 98, 34, 8, 1, 1, 9, 43, 140, 343, 665, 1050, 1373]

cp's OEIS Frontend

A025564 Triangular array, read by rows: pairwise sums of trinomial array A027907.

Table of values

List of values