A378410 - cp's OEIS frontend

A378410 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(nk,k) / ((n-1)k+1).

n	a(n)
0	1
1	1
2	1
3	7
4	85
5	1581
6	40006
7	1288729
8	50578445
9	2344950745
10	125538581926
11	7626452229331
12	518557071012696
13	39027861427630167
14	3221686807607369921
15	289464281567009809303
16	28124498248184961490621
17	2938498159807193630239281
18	328556126358414341918608978

[1, 1, 1, 7, 85, 1581, 40006, 1288729, 50578445, 2344950745, 125538581926, 7626452229331, 518557071012696, 39027861427630167, 3221686807607369921, 289464281567009809303, 28124498248184961490621, 2938498159807193630239281, 328556126358414341918608978]

cp's OEIS Frontend

A378410 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(nk,k) / ((n-1)k+1).

Table of values

List of values

cp's OEIS Frontend

A378410 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(n*k,k) / ((n-1)*k+1).

Table of values

List of values

A378410 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n-1,k-1) * binomial(nk,k) / ((n-1)k+1).