A113109 - cp's OEIS frontend

A113109 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 = 2 and t_i = 2 (mod 4) and t_{i+1} <= 5*t_i for 1

n	a(n)
0	1
1	2
2	16
3	440
4	43600
5	16698560
6	26098464448
7	172513149018752
8	4938593053649344000
9	622793203804403960906240
10	350552003258337075784341271552
11	890153650520295355798989668668129280

[1, 2, 16, 440, 43600, 16698560, 26098464448, 172513149018752, 4938593053649344000, 622793203804403960906240, 350552003258337075784341271552, 890153650520295355798989668668129280]

cp's OEIS Frontend

A113109 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 = 2 and t_i = 2 (mod 4) and t_{i+1} <= 5*t_i for 1

Table of values

List of values