A362523 - cp's OEIS frontend

A362523 a(n) = n! * Sum_{k=0..floor(n/3)} (k+1)^(k-1) / (k! * (n-3*k)!).

n	a(n)
0	1
1	1
2	1
3	7
4	25
5	61
6	1201
7	7771
8	30577
9	1058905
10	9904321
11	53722351
12	2708688841
13	33126146197
14	228967340785
15	15262865820931
16	230517745701601
17	1936173471789361
18	161021598306402817
19	2894434429492525015
20	28614958982310290041

[1, 1, 1, 7, 25, 61, 1201, 7771, 30577, 1058905, 9904321, 53722351, 2708688841, 33126146197, 228967340785, 15262865820931, 230517745701601, 1936173471789361, 161021598306402817, 2894434429492525015, 28614958982310290041]

cp's OEIS Frontend

A362523 a(n) = n! * Sum_{k=0..floor(n/3)} (k+1)^(k-1) / (k! * (n-3*k)!).

Table of values

List of values