A303565 - cp's OEIS frontend

A303565 a(n) = [x^n] (Sum_{k=0..n} k!x^k)/(Sum_{k=0..n} k!(-x)^k).

n	a(n)
0	1
1	2
2	2
3	10
4	18
5	202
6	418
7	8762
8	18546
9	648842
10	1361090
11	72858394
12	150831762
13	11533704106
14	23631529186
15	2447950210490
16	4980921068466
17	671176131216458
18	1359534955872002
19	230971485534437722
20	466475222145987282
21	97492025362288590058
22	196500782158151756578

[1, 2, 2, 10, 18, 202, 418, 8762, 18546, 648842, 1361090, 72858394, 150831762, 11533704106, 23631529186, 2447950210490, 4980921068466, 671176131216458, 1359534955872002, 230971485534437722, 466475222145987282, 97492025362288590058, 196500782158151756578]

cp's OEIS Frontend

A303565 a(n) = [x^n] (Sum_{k=0..n} k!x^k)/(Sum_{k=0..n} k!(-x)^k).

Table of values

List of values

cp's OEIS Frontend

A303565 a(n) = [x^n] (Sum_{k=0..n} k!*x^k)/(Sum_{k=0..n} k!*(-x)^k).

Table of values

List of values

A303565 a(n) = [x^n] (Sum_{k=0..n} k!x^k)/(Sum_{k=0..n} k!(-x)^k).