A342578 - cp's OEIS frontend

A342578 a(n) = n! * [x^n] (Sum_{j>=0} n^(j(j+1)/2) x^j/j!)^(1/n) for n > 0, a(0) = 1.

n	a(n)
0	1
1	1
2	3
3	199
4	249337
5	6062674201
6	3653786369479951
7	65709007885111803731947
8	40564683796482484146182142025377
9	969773549559254966290998252899999751714721
10	999999990999996719397362087568018696141879478712251051
11	49037072510879011742983689973641327840345400616866967292640434759551

[1, 1, 3, 199, 249337, 6062674201, 3653786369479951, 65709007885111803731947, 40564683796482484146182142025377, 969773549559254966290998252899999751714721, 999999990999996719397362087568018696141879478712251051, 49037072510879011742983689973641327840345400616866967292640434759551]

cp's OEIS Frontend

A342578 a(n) = n! * [x^n] (Sum_{j>=0} n^(j(j+1)/2) x^j/j!)^(1/n) for n > 0, a(0) = 1.

Table of values

List of values

cp's OEIS Frontend

A342578 a(n) = n! * [x^n] (Sum_{j>=0} n^(j*(j+1)/2) * x^j/j!)^(1/n) for n > 0, a(0) = 1.

Table of values

List of values

A342578 a(n) = n! * [x^n] (Sum_{j>=0} n^(j(j+1)/2) x^j/j!)^(1/n) for n > 0, a(0) = 1.