A092166 - cp's OEIS frontend

A092166 Let M = 2 X 2 matrix [ 1 2 / 5 4 ]; a(n) = (2,1) entry of M^n.

n	a(n)
1	5
2	25
3	155
4	925
5	5555
6	33325
7	199955
8	1199725
9	7198355
10	43190125
11	259140755
12	1554844525
13	9329067155
14	55974402925
15	335846417555
16	2015078505325
17	12090471031955
18	72542826191725
19	435256957150355
20	2611541742902125

[5, 25, 155, 925, 5555, 33325, 199955, 1199725, 7198355, 43190125, 259140755, 1554844525, 9329067155, 55974402925, 335846417555, 2015078505325, 12090471031955, 72542826191725, 435256957150355, 2611541742902125]

cp's OEIS Frontend

A092166 Let M = 2 X 2 matrix [ 1 2 / 5 4 ]; a(n) = (2,1) entry of M^n.

Table of values

List of values