A224524 - cp's OEIS frontend

A224524 Table read by antidiagonals: T(n,k) is the number of idempotent n X n 0..k matrices of rank 1.

n	a(n)
1	1
2	1
3	6
4	1
5	10
6	27
7	1
8	14
9	69
10	108
11	1
12	18
13	123
14	404
15	405
16	1
17	22
18	195
19	892
20	2155
21	1458
22	1
23	26
24	273
25	1716
26	5845
27	10830
28	5103
29	1
30	30
31	375
32	2732
33	13525
34	36042
35	52241
36	17496
37	1
38	34
39	477
40	4324
41	24575
42	99774
43	213647
44	244648
45	59049
46	1
47	38
48	603
49	6060
50	44545
51	208146
52	705215
53	1232504
54	1120599
55	196830

[1, 1, 6, 1, 10, 27, 1, 14, 69, 108, 1, 18, 123, 404, 405, 1, 22, 195, 892, 2155, 1458, 1, 26, 273, 1716, 5845, 10830, 5103, 1, 30, 375, 2732, 13525, 36042, 52241, 17496, 1, 34, 477, 4324, 24575, 99774, 213647, 244648, 59049, 1, 38, 603, 6060, 44545, 208146, 705215, 1232504, 1120599, 196830]

cp's OEIS Frontend

A224524 Table read by antidiagonals: T(n,k) is the number of idempotent n X n 0..k matrices of rank 1.

Table of values

List of values