A351583 - cp's OEIS frontend

A351583 Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2m-1 Y's and 2n-1 Z's in which the X lies to the right of at least m Y's and at least n Z's.

n	a(n)
2	2
3	7
4	7
5	15
6	52
7	15
8	26
9	192
10	192
11	26
12	40
13	510
14	1086
15	510
16	40
17	57
18	1115
19	4098
20	4098
21	1115
22	57
23	77
24	2142
25	12075
26	20840
27	12075
28	2142
29	77
30	100
31	3752
32	30072
33	79600
34	79600
35	30072
36	3752
37	100
38	126
39	6132
40	66276
41	249408
42	382510
43	249408
44	66276
45	6132
46	126

[2, 7, 7, 15, 52, 15, 26, 192, 192, 26, 40, 510, 1086, 510, 40, 57, 1115, 4098, 4098, 1115, 57, 77, 2142, 12075, 20840, 12075, 2142, 77, 100, 3752, 30072, 79600, 79600, 30072, 3752, 100, 126, 6132, 66276, 249408, 382510, 249408, 66276, 6132, 126]

cp's OEIS Frontend

A351583 Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2m-1 Y's and 2n-1 Z's in which the X lies to the right of at least m Y's and at least n Z's.

Table of values

List of values

cp's OEIS Frontend

A351583 Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2*m-1 Y's and 2*n-1 Z's in which the X lies to the right of at least m Y's and at least n Z's.

Table of values

List of values

A351583 Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2m-1 Y's and 2n-1 Z's in which the X lies to the right of at least m Y's and at least n Z's.