A265610 - cp's OEIS frontend

A265610 a(n) = rf(n, n+2)/(n+2)! - rf(n, n)/n!, rf the rising factorial A265609.

n	a(n)
0	-1
1	0
2	2
3	11
4	49
5	204
6	825
7	3289
8	13013
9	51272
10	201552
11	791350
12	3105322
13	12183560
14	47805615
15	187623765
16	736618125
17	2893125840
18	11367801060
19	44686512090
20	175739405790
21	691437981000
22	2721606268290
23	10717182330426
24	42219554975874
25	166386610183024
26	655976895434000

[-1, 0, 2, 11, 49, 204, 825, 3289, 13013, 51272, 201552, 791350, 3105322, 12183560, 47805615, 187623765, 736618125, 2893125840, 11367801060, 44686512090, 175739405790, 691437981000, 2721606268290, 10717182330426, 42219554975874, 166386610183024, 655976895434000]

cp's OEIS Frontend

A265610 a(n) = rf(n, n+2)/(n+2)! - rf(n, n)/n!, rf the rising factorial A265609.

Table of values

List of values