A356891 - cp's OEIS frontend

A356891 a(n) = a(n-1) * a(n-2) + 1 if n is even, otherwise a(n) = a(n-3) + 1, with a(0) = a(1) = 1.

n	a(n)
0	1
1	1
2	2
3	2
4	5
5	3
6	16
7	6
8	97
9	17
10	1650
11	98
12	161701
13	1651
14	266968352
15	161702
16	43169316455105
17	266968353
18	11524841314155180292066
19	43169316455106
20	497519521785644682185076928856988997
21	11524841314155180292067

[1, 1, 2, 2, 5, 3, 16, 6, 97, 17, 1650, 98, 161701, 1651, 266968352, 161702, 43169316455105, 266968353, 11524841314155180292066, 43169316455106, 497519521785644682185076928856988997, 11524841314155180292067]

cp's OEIS Frontend

A356891 a(n) = a(n-1) * a(n-2) + 1 if n is even, otherwise a(n) = a(n-3) + 1, with a(0) = a(1) = 1.

Table of values

List of values