A253853 - cp's OEIS frontend

A253853 a(n) = 1 + a(n-2)*a(n-3), with a(0) = a(1) = a(2) = 1.

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	3
6	5
7	7
8	16
9	36
10	113
11	577
12	4069
13	65202
14	2347814
15	265306939
16	153082168429
17	622891345681347
18	40613761521380428832
19	95353557892558423217593864
20	25297960567233966143149250083396705
21	3872666660463510383775257066365338059531886849

[1, 1, 1, 2, 2, 3, 5, 7, 16, 36, 113, 577, 4069, 65202, 2347814, 265306939, 153082168429, 622891345681347, 40613761521380428832, 95353557892558423217593864, 25297960567233966143149250083396705, 3872666660463510383775257066365338059531886849]

cp's OEIS Frontend

A253853 a(n) = 1 + a(n-2)*a(n-3), with a(0) = a(1) = a(2) = 1.

Table of values

List of values