A235605 - cp's OEIS frontend

A235605 Shanks's array c_{a,n} (a >= 1, n >= 0) that generalizes Euler and class numbers, read by antidiagonals upwards.

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	5
7	1
8	8
9	57
10	61
11	2
12	16
13	352
14	2763
15	1385
16	2
17	30
18	1280
19	38528
20	250737
21	50521
22	1
23	46
24	3522
25	249856
26	7869952
27	36581523
28	2702765
29	2
30	64
31	7970
32	1066590
33	90767360
34	2583554048
35	7828053417
36	199360981
37	2
38	96
39	15872
40	3487246
41	604935042
42	52975108096

[1, 1, 1, 1, 3, 5, 1, 8, 57, 61, 2, 16, 352, 2763, 1385, 2, 30, 1280, 38528, 250737, 50521, 1, 46, 3522, 249856, 7869952, 36581523, 2702765, 2, 64, 7970, 1066590, 90767360, 2583554048, 7828053417, 199360981, 2, 96, 15872, 3487246, 604935042, 52975108096]

cp's OEIS Frontend

A235605 Shanks's array c_{a,n} (a >= 1, n >= 0) that generalizes Euler and class numbers, read by antidiagonals upwards.

Table of values

List of values