A316704 - cp's OEIS frontend

A316704 E.g.f.: Sum_{n>=0} (2x)^n/n! Product_{k=1..n} (n+1-k) + k*x.

n	a(n)
0	1
1	2
2	12
3	108
4	1312
5	20320
6	381408
7	8420160
8	213813248
9	6139270656
10	196691281920
11	6956268042240
12	269187901974528
13	11313963679948800
14	513251989767487488
15	24995547184468008960
16	1300702468667721646080
17	72026879559935471124480
18	4229000873160355032072192
19	262425376836886982897958912
20	17161024720479004010930503680
21	1179556709319250468710226329600

[1, 2, 12, 108, 1312, 20320, 381408, 8420160, 213813248, 6139270656, 196691281920, 6956268042240, 269187901974528, 11313963679948800, 513251989767487488, 24995547184468008960, 1300702468667721646080, 72026879559935471124480, 4229000873160355032072192, 262425376836886982897958912, 17161024720479004010930503680, 1179556709319250468710226329600]

cp's OEIS Frontend

A316704 E.g.f.: Sum_{n>=0} (2x)^n/n! Product_{k=1..n} (n+1-k) + k*x.

Table of values

List of values

cp's OEIS Frontend

A316704 E.g.f.: Sum_{n>=0} (2*x)^n/n! * Product_{k=1..n} (n+1-k) + k*x.

Table of values

List of values

A316704 E.g.f.: Sum_{n>=0} (2x)^n/n! Product_{k=1..n} (n+1-k) + k*x.