A372348 - cp's OEIS frontend

A372348 a(n) = Sum_{j=0..n} p(n - j, j) where p(n, x) = Sum_{k=0..n} k! * Lah(n, k) * x^k where Lah = A271703.

n	a(n)
0	1
1	1
2	2
3	7
4	40
5	329
6	3550
7	47755
8	777812
9	15048925
10	341018314
11	8946278015
12	268923178720
13	9176058440977
14	352386991982390
15	15115253160180019
16	719367763801641580
17	37767206102310829445
18	2176271214087106315042
19	137024328250953628940455
20	9388717924596833591237624

[1, 1, 2, 7, 40, 329, 3550, 47755, 777812, 15048925, 341018314, 8946278015, 268923178720, 9176058440977, 352386991982390, 15115253160180019, 719367763801641580, 37767206102310829445, 2176271214087106315042, 137024328250953628940455, 9388717924596833591237624]

cp's OEIS Frontend

A372348 a(n) = Sum_{j=0..n} p(n - j, j) where p(n, x) = Sum_{k=0..n} k! * Lah(n, k) * x^k where Lah = A271703.

Table of values

List of values