A383755 - cp's OEIS frontend

A383755 Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 3^(n-k) * T(n-1,k-1) + 4^k * T(n-1,k) with T(n,k) = n^k if n*k=0.

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	1
6	1
7	37
8	37
9	1
10	1
11	175
12	925
13	175
14	1
15	1
16	781
17	19525
18	19525
19	781
20	1
21	1
22	3367
23	375661
24	1776775
25	375661
26	3367
27	1
28	1
29	14197
30	6828757
31	144142141
32	144142141
33	6828757
34	14197
35	1
36	1
37	58975
38	119609725
39	10884484975
40	48575901517
41	10884484975
42	119609725
43	58975
44	1

[1, 1, 1, 1, 7, 1, 1, 37, 37, 1, 1, 175, 925, 175, 1, 1, 781, 19525, 19525, 781, 1, 1, 3367, 375661, 1776775, 375661, 3367, 1, 1, 14197, 6828757, 144142141, 144142141, 6828757, 14197, 1, 1, 58975, 119609725, 10884484975, 48575901517, 10884484975, 119609725, 58975, 1]

cp's OEIS Frontend

A383755 Triangle T(n,k), n >= 0, 0 <= k <= n, read by rows, where T(n,k) = 3^(n-k) * T(n-1,k-1) + 4^k * T(n-1,k) with T(n,k) = n^k if n*k=0.

Table of values

List of values