A349480 - cp's OEIS frontend

A349480 a(n) = Sum_{j=0..n} (-1)^(n-j) * Product_{k=(j-1)n+1..jn} k.

n	a(n)
0	1
1	1
2	10
3	390
4	33456
5	4845360
6	1059099840
7	325460948400
8	133697543616000
9	70733019878196480
10	46831083260349024000
11	37927830201482962540800
12	36883442511877368877747200
13	42409212946187708288828160000

[1, 1, 10, 390, 33456, 4845360, 1059099840, 325460948400, 133697543616000, 70733019878196480, 46831083260349024000, 37927830201482962540800, 36883442511877368877747200, 42409212946187708288828160000]

cp's OEIS Frontend

A349480 a(n) = Sum_{j=0..n} (-1)^(n-j) * Product_{k=(j-1)n+1..jn} k.

Table of values

List of values

cp's OEIS Frontend

A349480 a(n) = Sum_{j=0..n} (-1)^(n-j) * Product_{k=(j-1)*n+1..j*n} k.

Table of values

List of values

A349480 a(n) = Sum_{j=0..n} (-1)^(n-j) * Product_{k=(j-1)n+1..jn} k.