A121412 - cp's OEIS frontend

A121412 Triangular matrix T, read by rows, where row n of T equals row (n-1) of T^(n+1) with an appended '1'.

n	a(n)
0	1
1	1
2	1
3	3
4	1
5	1
6	18
7	4
8	1
9	1
10	170
11	30
12	5
13	1
14	1
15	2220
16	335
17	45
18	6
19	1
20	1
21	37149
22	4984
23	581
24	63
25	7
26	1
27	1
28	758814
29	92652
30	9730
31	924
32	84
33	8
34	1
35	1
36	18301950
37	2065146
38	199692
39	17226
40	1380
41	108
42	9
43	1
44	1
45	508907970
46	53636520
47	4843125
48	387567
49	28365
50	1965
51	135
52	10
53	1
54	1

[1, 1, 1, 3, 1, 1, 18, 4, 1, 1, 170, 30, 5, 1, 1, 2220, 335, 45, 6, 1, 1, 37149, 4984, 581, 63, 7, 1, 1, 758814, 92652, 9730, 924, 84, 8, 1, 1, 18301950, 2065146, 199692, 17226, 1380, 108, 9, 1, 1, 508907970, 53636520, 4843125, 387567, 28365, 1965, 135, 10, 1, 1]

cp's OEIS Frontend

A121412 Triangular matrix T, read by rows, where row n of T equals row (n-1) of T^(n+1) with an appended '1'.

Table of values

List of values