A144447 - cp's OEIS frontend

A144447 Triangle T(n, k) = T(n-1, k) + T(n, k-1) + T(n-1, k-1) + T(n-2, k-1), with T(n, 1) = T(n, n) = 1, read by rows.

n	a(n)
1	1
2	1
3	1
4	1
5	4
6	1
7	1
8	7
9	13
10	1
11	1
12	10
13	34
14	49
15	1
16	1
17	13
18	64
19	160
20	211
21	1
22	1
23	16
24	103
25	361
26	781
27	994
28	1
29	1
30	19
31	151
32	679
33	1981
34	3967
35	4963
36	1
37	1
38	22
39	208
40	1141
41	4162
42	10891
43	20815
44	25780
45	1
46	1
47	25
48	274
49	1774
50	7756
51	24790
52	60463
53	112021
54	137803
55	1

[1, 1, 1, 1, 4, 1, 1, 7, 13, 1, 1, 10, 34, 49, 1, 1, 13, 64, 160, 211, 1, 1, 16, 103, 361, 781, 994, 1, 1, 19, 151, 679, 1981, 3967, 4963, 1, 1, 22, 208, 1141, 4162, 10891, 20815, 25780, 1, 1, 25, 274, 1774, 7756, 24790, 60463, 112021, 137803, 1]

cp's OEIS Frontend

A144447 Triangle T(n, k) = T(n-1, k) + T(n, k-1) + T(n-1, k-1) + T(n-2, k-1), with T(n, 1) = T(n, n) = 1, read by rows.

Table of values

List of values