A379745 - cp's OEIS frontend

A379745 a(n) = Sum_{k=1..n-1} binomial(n, k)2^(n-k-1)(k-1).

n	a(n)
1	0
2	0
3	3
4	20
5	95
6	394
7	1519
8	5592
9	19935
10	69398
11	237215
12	799204
13	2661295
14	8776962
15	28714191
16	93300656
17	301392575
18	968682286
19	3099626047
20	9879746748
21	31382108175
22	99375452570
23	313814790383
24	988511766280
25	3106741678495
26	9743852563014
27	30502457048799
28	95320102780052
29	297398570349935
30	926510631296818
31	2882476923066895
32	8956266393600864
33	27795307127744895
34	86165447371545182
35	266834924374534271

[0, 0, 3, 20, 95, 394, 1519, 5592, 19935, 69398, 237215, 799204, 2661295, 8776962, 28714191, 93300656, 301392575, 968682286, 3099626047, 9879746748, 31382108175, 99375452570, 313814790383, 988511766280, 3106741678495, 9743852563014, 30502457048799, 95320102780052, 297398570349935, 926510631296818, 2882476923066895, 8956266393600864, 27795307127744895, 86165447371545182, 266834924374534271]

cp's OEIS Frontend

A379745 a(n) = Sum_{k=1..n-1} binomial(n, k)2^(n-k-1)(k-1).

Table of values

List of values

cp's OEIS Frontend

A379745 a(n) = Sum_{k=1..n-1} binomial(n, k)*2^(n-k-1)*(k-1).

Table of values

List of values

A379745 a(n) = Sum_{k=1..n-1} binomial(n, k)2^(n-k-1)(k-1).