A249474 - cp's OEIS frontend

A249474 E.g.f.: P(x)/exp(1) + Q(x), where P(x) = 1/Product_{n>=1} (1 - x^n/n) and Q(x) = Sum_{n>=1} -(-1)^n / Product_{k=1..n} (k - x^k).

n	a(n)
0	1
1	1
2	2
3	7
4	30
5	169
6	1128
7	8700
8	76494
9	753139
10	8182188
11	97131376
12	1256860330
13	17470791933
14	261284377168
15	4164406202270
16	70677340199670
17	1268718107324255
18	24091289738163140
19	480954355282406340
20	10097484764045220626
21	221918808641500960217
22	5103937368681669463800

[1, 1, 2, 7, 30, 169, 1128, 8700, 76494, 753139, 8182188, 97131376, 1256860330, 17470791933, 261284377168, 4164406202270, 70677340199670, 1268718107324255, 24091289738163140, 480954355282406340, 10097484764045220626, 221918808641500960217, 5103937368681669463800]

cp's OEIS Frontend

A249474 E.g.f.: P(x)/exp(1) + Q(x), where P(x) = 1/Product_{n>=1} (1 - x^n/n) and Q(x) = Sum_{n>=1} -(-1)^n / Product_{k=1..n} (k - x^k).

Table of values

List of values