A218580 - cp's OEIS frontend

A218580 Triangle read by rows: T(n,k) is the number of ascent sequences of length n with first occurrence of the maximal value at position k-1.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	2
7	1
8	4
9	5
10	5
11	1
12	8
13	13
14	15
15	16
16	1
17	16
18	35
19	47
20	56
21	62
22	1
23	32
24	97
25	153
26	204
27	248
28	279
29	1
30	64
31	275
32	515
33	770
34	1030
35	1257
36	1423
37	1
38	128
39	793
40	1785
41	3000
42	4424
43	5869
44	7140
45	8100
46	1
47	256
48	2315
49	6347
50	12026
51	19582
52	28293
53	37058
54	44843
55	50887

[1, 1, 1, 1, 2, 2, 1, 4, 5, 5, 1, 8, 13, 15, 16, 1, 16, 35, 47, 56, 62, 1, 32, 97, 153, 204, 248, 279, 1, 64, 275, 515, 770, 1030, 1257, 1423, 1, 128, 793, 1785, 3000, 4424, 5869, 7140, 8100, 1, 256, 2315, 6347, 12026, 19582, 28293, 37058, 44843, 50887]

cp's OEIS Frontend

A218580 Triangle read by rows: T(n,k) is the number of ascent sequences of length n with first occurrence of the maximal value at position k-1.

Table of values

List of values