A226506 - cp's OEIS frontend

A226506 a(n) = B(n+2)-3*B(n+1)+B(n), where B(i) are the Bell numbers A000110.

n	a(n)
0	0
1	0
2	2
3	12
4	62
5	320
6	1712
7	9604
8	56674
9	351792
10	2293862
11	15682216
12	112179608
13	837905016
14	6522165834
15	52807401908
16	443962338894
17	3869376656384
18	34908008426360
19	325530083655692
20	3133830448212442
21	31106728455899128
22	318009567467999574
23	3344865730200667832
24	36161434396223563504

[0, 0, 2, 12, 62, 320, 1712, 9604, 56674, 351792, 2293862, 15682216, 112179608, 837905016, 6522165834, 52807401908, 443962338894, 3869376656384, 34908008426360, 325530083655692, 3133830448212442, 31106728455899128, 318009567467999574, 3344865730200667832, 36161434396223563504]

cp's OEIS Frontend

A226506 a(n) = B(n+2)-3*B(n+1)+B(n), where B(i) are the Bell numbers A000110.

Table of values

List of values