A370236 - cp's OEIS frontend

A370236 Triangle read by rows: T(n, k) is the number of partitions of genus 1 and k parts of the n-set (n >= 4, 2 <= k <= n-2).

n	a(n)
4	1
5	5
6	5
7	15
8	40
9	15
10	35
11	175
12	175
13	35
14	70
15	560
16	1050
17	560
18	70
19	126
20	1470
21	4410
22	4410
23	1470
24	126
25	210
26	3360
27	14700
28	23520
29	14700
30	3360
31	210
32	330
33	6930
34	41580
35	97020
36	97020
37	41580
38	6930
39	330
40	495
41	13200
42	103950
43	332640
44	485100
45	332640
46	103950
47	13200
48	495

[1, 5, 5, 15, 40, 15, 35, 175, 175, 35, 70, 560, 1050, 560, 70, 126, 1470, 4410, 4410, 1470, 126, 210, 3360, 14700, 23520, 14700, 3360, 210, 330, 6930, 41580, 97020, 97020, 41580, 6930, 330, 495, 13200, 103950, 332640, 485100, 332640, 103950, 13200, 495]

cp's OEIS Frontend

A370236 Triangle read by rows: T(n, k) is the number of partitions of genus 1 and k parts of the n-set (n >= 4, 2 <= k <= n-2).

Table of values

List of values