A344840 - cp's OEIS frontend

A344840 a(0) = 1; a(n) = 5 * Sum_{k=1..n} binomial(n,k) * a(k-1).

n	a(n)
0	1
1	5
2	35
3	265
4	2195
5	19625
6	187755
7	1909185
8	20521515
9	232124745
10	2752591475
11	34108980105
12	440444019835
13	5912197332865
14	82320781521195
15	1186703083508025
16	17680850448587155
17	271845880552898985
18	4307188044378111915
19	70236616096770062945
20	1177406236243423738475

[1, 5, 35, 265, 2195, 19625, 187755, 1909185, 20521515, 232124745, 2752591475, 34108980105, 440444019835, 5912197332865, 82320781521195, 1186703083508025, 17680850448587155, 271845880552898985, 4307188044378111915, 70236616096770062945, 1177406236243423738475]

cp's OEIS Frontend

A344840 a(0) = 1; a(n) = 5 * Sum_{k=1..n} binomial(n,k) * a(k-1).

Table of values

List of values