A348321 - cp's OEIS frontend

A348321 a(n) = Sum_{k=0..floor(n/2)} (-1)^k * binomial(n(n-k),nk).

n	a(n)
0	1
1	1
2	0
3	-19
4	-493
5	-12500
6	2110381
7	2291797033
8	2190576317924
9	641690166054149
10	-51808237792071009216
11	-1670420776971967146820397
12	-51706433129693385388017540008
13	3622699946475084834038607930411332
14	5598748000229343046813449019221837072281

[1, 1, 0, -19, -493, -12500, 2110381, 2291797033, 2190576317924, 641690166054149, -51808237792071009216, -1670420776971967146820397, -51706433129693385388017540008, 3622699946475084834038607930411332, 5598748000229343046813449019221837072281]

cp's OEIS Frontend

A348321 a(n) = Sum_{k=0..floor(n/2)} (-1)^k * binomial(n(n-k),nk).

Table of values

List of values

cp's OEIS Frontend

A348321 a(n) = Sum_{k=0..floor(n/2)} (-1)^k * binomial(n*(n-k),n*k).

Table of values

List of values

A348321 a(n) = Sum_{k=0..floor(n/2)} (-1)^k * binomial(n(n-k),nk).