A337188 - cp's OEIS frontend

A337188 a(n) = determinant([a(n-1), a(n-2); a(n-4), a(n-3)]) for n >= 5, a(n) = n otherwise.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	13
8	37
9	194
10	2263
11	81209
12	15670815
13	35447299799
14	2878604306322646
15	45110072663945746399499
16	1599030269628449375351280360624211
17	4602975420092714513333476912306224941820648781605

[1, 2, 3, 4, 5, 7, 13, 37, 194, 2263, 81209, 15670815, 35447299799, 2878604306322646, 45110072663945746399499, 1599030269628449375351280360624211, 4602975420092714513333476912306224941820648781605]

cp's OEIS Frontend

A337188 a(n) = determinant([a(n-1), a(n-2); a(n-4), a(n-3)]) for n >= 5, a(n) = n otherwise.

Table of values

List of values