A126617 - cp's OEIS frontend

A126617 a(n) = Sum_{i=0..n} (-2)^(n-i)B(i)binomial(n,i) where B(n) = Bell numbers A000110(n).

n	a(n)
0	1
1	-1
2	2
3	-3
4	7
5	-10
6	31
7	-21
8	204
9	307
10	2811
11	12100
12	74053
13	432211
14	2768858
15	18473441
16	129941283
17	956187814
18	7351696139
19	58897405759
20	490681196604
21	4242903803727
22	38014084430983
23	352341755256348
24	3373662303816313
25	33326335433122711
26	339232538387804530

[1, -1, 2, -3, 7, -10, 31, -21, 204, 307, 2811, 12100, 74053, 432211, 2768858, 18473441, 129941283, 956187814, 7351696139, 58897405759, 490681196604, 4242903803727, 38014084430983, 352341755256348, 3373662303816313, 33326335433122711, 339232538387804530]

cp's OEIS Frontend

A126617 a(n) = Sum_{i=0..n} (-2)^(n-i)B(i)binomial(n,i) where B(n) = Bell numbers A000110(n).

Table of values

List of values

cp's OEIS Frontend

A126617 a(n) = Sum_{i=0..n} (-2)^(n-i)*B(i)*binomial(n,i) where B(n) = Bell numbers A000110(n).

Table of values

List of values

A126617 a(n) = Sum_{i=0..n} (-2)^(n-i)B(i)binomial(n,i) where B(n) = Bell numbers A000110(n).