A113107 - cp's OEIS frontend

A113107 Number of 5-tournament sequences: a(n) gives the number of increasing sequences of n positive integers (t_1,t_2,...,t_n) such that t_1 = 1 and t_i = 1 (mod 4) and t_{i+1} <= 5*t_i for 1

n	a(n)
0	1
1	1
2	5
3	85
4	4985
5	1082905
6	930005021
7	3306859233805
8	50220281721033905
9	3328966349792343354865
10	978820270264589718999911669
11	1292724512951963810375572954693765

[1, 1, 5, 85, 4985, 1082905, 930005021, 3306859233805, 50220281721033905, 3328966349792343354865, 978820270264589718999911669, 1292724512951963810375572954693765]

cp's OEIS Frontend

A113107 Number of 5-tournament sequences: a(n) gives the number of increasing sequences of n positive integers (t_1,t_2,...,t_n) such that t_1 = 1 and t_i = 1 (mod 4) and t_{i+1} <= 5*t_i for 1

Table of values

List of values