A047662 - cp's OEIS frontend

A047662 Square array a(n,k) read by antidiagonals: a(n,1)=n, a(1,k)=k, a(n,k)=a(n-1,k-1)+a(n-1,k)+a(n,k-1)+1.

n	a(n)
1	1
2	2
3	2
4	3
5	6
6	3
7	4
8	12
9	12
10	4
11	5
12	20
13	31
14	20
15	5
16	6
17	30
18	64
19	64
20	30
21	6
22	7
23	42
24	115
25	160
26	115
27	42
28	7
29	8
30	56
31	188
32	340
33	340
34	188
35	56
36	8
37	9
38	72
39	287
40	644
41	841
42	644
43	287
44	72
45	9
46	10
47	90
48	416
49	1120
50	1826
51	1826
52	1120
53	416
54	90
55	10
56	11
57	110
58	579
59	1824
60	3591

[1, 2, 2, 3, 6, 3, 4, 12, 12, 4, 5, 20, 31, 20, 5, 6, 30, 64, 64, 30, 6, 7, 42, 115, 160, 115, 42, 7, 8, 56, 188, 340, 340, 188, 56, 8, 9, 72, 287, 644, 841, 644, 287, 72, 9, 10, 90, 416, 1120, 1826, 1826, 1120, 416, 90, 10, 11, 110, 579, 1824, 3591]

cp's OEIS Frontend

A047662 Square array a(n,k) read by antidiagonals: a(n,1)=n, a(1,k)=k, a(n,k)=a(n-1,k-1)+a(n-1,k)+a(n,k-1)+1.

Table of values

List of values