A121335 - cp's OEIS frontend

A121335 Triangle, read by rows, where T(n,k) = C( n*(n+1)/2 + n-k + 1, n-k), for n>=k>=0.

n	a(n)
0	1
1	3
2	1
3	15
4	5
5	1
6	120
7	36
8	8
9	1
10	1365
11	364
12	78
13	12
14	1
15	20349
16	4845
17	969
18	153
19	17
20	1
21	376740
22	80730
23	14950
24	2300
25	276
26	23
27	1
28	8347680
29	1623160
30	278256
31	40920
32	4960
33	465
34	30
35	1
36	215553195
37	38320568
38	6096454
39	850668
40	101270
41	9880
42	741
43	38
44	1
45	6358402050

[1, 3, 1, 15, 5, 1, 120, 36, 8, 1, 1365, 364, 78, 12, 1, 20349, 4845, 969, 153, 17, 1, 376740, 80730, 14950, 2300, 276, 23, 1, 8347680, 1623160, 278256, 40920, 4960, 465, 30, 1, 215553195, 38320568, 6096454, 850668, 101270, 9880, 741, 38, 1, 6358402050]

cp's OEIS Frontend

A121335 Triangle, read by rows, where T(n,k) = C( n*(n+1)/2 + n-k + 1, n-k), for n>=k>=0.

Table of values

List of values