A183157 - cp's OEIS frontend

A183157 Triangle read by rows: T(n,k) is the number of partial isometries of an n-chain of height k (height of alpha = |Im(alpha)|).

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	2
6	1
7	9
8	10
9	2
10	1
11	16
12	28
13	12
14	2
15	1
16	25
17	60
18	40
19	14
20	2
21	1
22	36
23	110
24	100
25	54
26	16
27	2
28	1
29	49
30	182
31	210
32	154
33	70
34	18
35	2
36	1
37	64
38	280
39	392
40	364
41	224
42	88
43	20
44	2
45	1
46	81
47	408
48	672
49	756
50	588
51	312
52	108
53	22
54	2
55	1
56	100
57	570
58	1080
59	1428
60	1344
61	900
62	420
63	130
64	24
65	2

[1, 1, 1, 1, 4, 2, 1, 9, 10, 2, 1, 16, 28, 12, 2, 1, 25, 60, 40, 14, 2, 1, 36, 110, 100, 54, 16, 2, 1, 49, 182, 210, 154, 70, 18, 2, 1, 64, 280, 392, 364, 224, 88, 20, 2, 1, 81, 408, 672, 756, 588, 312, 108, 22, 2, 1, 100, 570, 1080, 1428, 1344, 900, 420, 130, 24, 2]

cp's OEIS Frontend

A183157 Triangle read by rows: T(n,k) is the number of partial isometries of an n-chain of height k (height of alpha = |Im(alpha)|).

Table of values

List of values