A140735 - cp's OEIS frontend

A140735 Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,2,3,...) in the main diagonal and (1,1,1,...) in the sub and subsubdiagonals.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	5
8	2
9	1
10	1
11	7
12	19
13	16
14	12
15	3
16	1
17	1
18	15
19	65
20	90
21	95
22	46
23	22
24	4
25	1
26	1
27	31
28	211
29	440
30	630
31	461
32	295
33	100
34	35
35	5
36	1
37	1
38	63
39	665
40	2002
41	3801
42	3836
43	3156
44	1556
45	710
46	185
47	51
48	6
49	1
50	1
51	127
52	2059
53	8736
54	21672
55	28819
56	29729
57	19440
58	11102
59	4116
60	1456
61	308
62	70

[1, 1, 1, 1, 1, 3, 5, 2, 1, 1, 7, 19, 16, 12, 3, 1, 1, 15, 65, 90, 95, 46, 22, 4, 1, 1, 31, 211, 440, 630, 461, 295, 100, 35, 5, 1, 1, 63, 665, 2002, 3801, 3836, 3156, 1556, 710, 185, 51, 6, 1, 1, 127, 2059, 8736, 21672, 28819, 29729, 19440, 11102, 4116, 1456, 308, 70]

cp's OEIS Frontend

A140735 Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,2,3,...) in the main diagonal and (1,1,1,...) in the sub and subsubdiagonals.

Table of values

List of values