A119401 - cp's OEIS frontend

A119401 a(n) = Sum_{k=0..n} (-1)^(n-k)(n!/k!)^2binomial(n,k).

n	a(n)
0	1
1	0
2	-3
3	46
4	-927
5	25476
6	-922715
7	42240402
8	-2337537279
9	147901509928
10	-9689806983699
11	464655683171670
12	44744831894861857
13	-27559636076854374804
14	9449663596631181414933
15	-3046842389019074859527174
16	1013788651063121586526459905

[1, 0, -3, 46, -927, 25476, -922715, 42240402, -2337537279, 147901509928, -9689806983699, 464655683171670, 44744831894861857, -27559636076854374804, 9449663596631181414933, -3046842389019074859527174, 1013788651063121586526459905]

cp's OEIS Frontend

A119401 a(n) = Sum_{k=0..n} (-1)^(n-k)(n!/k!)^2binomial(n,k).

Table of values

List of values

cp's OEIS Frontend

A119401 a(n) = Sum_{k=0..n} (-1)^(n-k)*(n!/k!)^2*binomial(n,k).

Table of values

List of values

A119401 a(n) = Sum_{k=0..n} (-1)^(n-k)(n!/k!)^2binomial(n,k).