A119673 - cp's OEIS frontend

A119673 T(n, k) = 3*T(n-1, k-1) + T(n-1, k) for k < n and T(n, n) = 1, T(n, k) = 0, if k < 0 or k > n; triangle read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	1
6	1
7	7
8	13
9	1
10	1
11	10
12	34
13	40
14	1
15	1
16	13
17	64
18	142
19	121
20	1
21	1
22	16
23	103
24	334
25	547
26	364
27	1
28	1
29	19
30	151
31	643
32	1549
33	2005
34	1093
35	1
36	1
37	22
38	208
39	1096
40	3478
41	6652
42	7108
43	3280
44	1
45	1
46	25
47	274
48	1720
49	6766
50	17086
51	27064
52	24604
53	9841
54	1
55	1
56	28
57	349
58	2542
59	11926
60	37384
61	78322
62	105796
63	83653
64	29524
65	1

[1, 1, 1, 1, 4, 1, 1, 7, 13, 1, 1, 10, 34, 40, 1, 1, 13, 64, 142, 121, 1, 1, 16, 103, 334, 547, 364, 1, 1, 19, 151, 643, 1549, 2005, 1093, 1, 1, 22, 208, 1096, 3478, 6652, 7108, 3280, 1, 1, 25, 274, 1720, 6766, 17086, 27064, 24604, 9841, 1, 1, 28, 349, 2542, 11926, 37384, 78322, 105796, 83653, 29524, 1]

cp's OEIS Frontend

A119673 T(n, k) = 3*T(n-1, k-1) + T(n-1, k) for k < n and T(n, n) = 1, T(n, k) = 0, if k < 0 or k > n; triangle read by rows.

Table of values

List of values