A105928 - cp's OEIS frontend

A105928 a(n) = ((n^3 - 4n + 1)A000166(n) + (-1)^(n+1)(n-1)^2) / 6.

n	a(n)
0	0
1	0
2	0
3	6
4	72
5	780
6	8520
7	97650
8	1189104
9	15441048
10	213816240
11	3152287710
12	49369524600
13	819340272036
14	14373198453432
15	265869427695690
16	5173710021214560
17	105683257864542000
18	2261482144869433824
19	50598160483438733238
20	1181568482279829616680
21	28750554997809594831420

[0, 0, 0, 6, 72, 780, 8520, 97650, 1189104, 15441048, 213816240, 3152287710, 49369524600, 819340272036, 14373198453432, 265869427695690, 5173710021214560, 105683257864542000, 2261482144869433824, 50598160483438733238, 1181568482279829616680, 28750554997809594831420]

cp's OEIS Frontend

A105928 a(n) = ((n^3 - 4n + 1)A000166(n) + (-1)^(n+1)(n-1)^2) / 6.

Table of values

List of values

cp's OEIS Frontend

A105928 a(n) = ((n^3 - 4n + 1)*A000166(n) + (-1)^(n+1)*(n-1)^2) / 6.

Table of values

List of values

A105928 a(n) = ((n^3 - 4n + 1)A000166(n) + (-1)^(n+1)(n-1)^2) / 6.