A300559 - cp's OEIS frontend

A300559 a(n) = n*(n+1)!/2 + 1.

n	a(n)
0	1
1	2
2	7
3	37
4	241
5	1801
6	15121
7	141121
8	1451521
9	16329601
10	199584001
11	2634508801
12	37362124801
13	566658892801
14	9153720576001
15	156920924160001
16	2845499424768001
17	54420176498688001
18	1094805903679488001
19	23112569077678080001
20	510909421717094400001
21	11802007641664880640001

[1, 2, 7, 37, 241, 1801, 15121, 141121, 1451521, 16329601, 199584001, 2634508801, 37362124801, 566658892801, 9153720576001, 156920924160001, 2845499424768001, 54420176498688001, 1094805903679488001, 23112569077678080001, 510909421717094400001, 11802007641664880640001]

cp's OEIS Frontend

A300559 a(n) = n*(n+1)!/2 + 1.

Table of values

List of values