A111840 - cp's OEIS frontend

A111840 Triangle P, read by rows, that satisfies [P^3](n,k) = P(n+1,k+1) for n>=k>=0, also [P^(3*m)](n,k) = [P^m](n+1,k+1) for all m, where [P^m](n,k) denotes the element at row n, column k, of the matrix power m of P, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k>=0.

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	1
6	18
7	18
8	9
9	1
10	216
11	216
12	135
13	27
14	1
15	5589
16	5589
17	4050
18	1134
19	81
20	1
21	336555
22	336555
23	269730
24	95256
25	9963
26	243
27	1
28	49768101
29	49768101
30	42724503
31	17926839
32	2450898
33	88938
34	729
35	1
36	18707873562
37	18707873562
38	16835895603
39	8074043145

[1, 1, 1, 3, 3, 1, 18, 18, 9, 1, 216, 216, 135, 27, 1, 5589, 5589, 4050, 1134, 81, 1, 336555, 336555, 269730, 95256, 9963, 243, 1, 49768101, 49768101, 42724503, 17926839, 2450898, 88938, 729, 1, 18707873562, 18707873562, 16835895603, 8074043145]

cp's OEIS Frontend

A111840 Triangle P, read by rows, that satisfies [P^3](n,k) = P(n+1,k+1) for n>=k>=0, also [P^(3*m)](n,k) = [P^m](n+1,k+1) for all m, where [P^m](n,k) denotes the element at row n, column k, of the matrix power m of P, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k>=0.

Table of values

List of values