A229046 - cp's OEIS frontend

A229046 G.f.: Sum_{n>=0} n! * x^n * (1+x)^n / Product_{k=1..n} (1 + k*x).

n	a(n)
0	1
1	1
2	2
3	4
4	10
5	28
6	88
7	304
8	1144
9	4648
10	20248
11	94024
12	463144
13	2409928
14	13198888
15	75848584
16	456066664
17	2862257608
18	18708144808
19	127096142344
20	895846801384
21	6540722530888
22	49392459602728
23	385251753351304
24	3099780861286504
25	25698921466247368
26	219294936264513448

[1, 1, 2, 4, 10, 28, 88, 304, 1144, 4648, 20248, 94024, 463144, 2409928, 13198888, 75848584, 456066664, 2862257608, 18708144808, 127096142344, 895846801384, 6540722530888, 49392459602728, 385251753351304, 3099780861286504, 25698921466247368, 219294936264513448]

cp's OEIS Frontend

A229046 G.f.: Sum_{n>=0} n! * x^n * (1+x)^n / Product_{k=1..n} (1 + k*x).

Table of values

List of values