A343674 - cp's OEIS frontend

A343674 a(0) = 1; a(n) = 4 * n * a(n-1) + Sum_{k=0..n-1} binomial(n,k) * a(k).

n	a(n)
0	1
1	5
2	51
3	781
4	15947
5	407021
6	12466251
7	445452813
8	18191122219
9	835737327661
10	42661645147403
11	2395510523568845
12	146739531459316587
13	9737742346694258157
14	695911661109898805323
15	53286006304099668950413
16	4352120920347139791200171
17	377674509364714706139413933
18	34702277449656625185428239755

[1, 5, 51, 781, 15947, 407021, 12466251, 445452813, 18191122219, 835737327661, 42661645147403, 2395510523568845, 146739531459316587, 9737742346694258157, 695911661109898805323, 53286006304099668950413, 4352120920347139791200171, 377674509364714706139413933, 34702277449656625185428239755]

cp's OEIS Frontend

A343674 a(0) = 1; a(n) = 4 * n * a(n-1) + Sum_{k=0..n-1} binomial(n,k) * a(k).

Table of values

List of values