A328811 - cp's OEIS frontend

A328811 a(n) = Sum_{i=0..n} (-1)^(n-i)binomial(n,i)Sum_{j=0..i} binomial(i,j)^n.

n	a(n)
0	1
1	1
2	3
3	31
4	1255
5	161671
6	75481581
7	121338954577
8	734884394666535
9	15970479086714049751
10	1347242827078365957146473
11	415839472158527880691583531617
12	507266883682599825619985300960971525
13	2284735689605775548174387143718048664963601

[1, 1, 3, 31, 1255, 161671, 75481581, 121338954577, 734884394666535, 15970479086714049751, 1347242827078365957146473, 415839472158527880691583531617, 507266883682599825619985300960971525, 2284735689605775548174387143718048664963601]

cp's OEIS Frontend

A328811 a(n) = Sum_{i=0..n} (-1)^(n-i)binomial(n,i)Sum_{j=0..i} binomial(i,j)^n.

Table of values

List of values

cp's OEIS Frontend

A328811 a(n) = Sum_{i=0..n} (-1)^(n-i)*binomial(n,i)*Sum_{j=0..i} binomial(i,j)^n.

Table of values

List of values

A328811 a(n) = Sum_{i=0..n} (-1)^(n-i)binomial(n,i)Sum_{j=0..i} binomial(i,j)^n.