A126390 - cp's OEIS frontend

A126390 a(n) = Sum_{i=0..n} 2^iB(i)binomial(n,i) where B(n) = Bell numbers A000110(n).

n	a(n)
0	1
1	3
2	13
3	71
4	457
5	3355
6	27509
7	248127
8	2434129
9	25741939
10	291397789
11	3510328695
12	44782460313
13	602513988107
14	8518757813637
15	126179029108463
16	1952609274344353
17	31492811964616163
18	528249539951292461
19	9197240228562763687
20	165923214676585626729

[1, 3, 13, 71, 457, 3355, 27509, 248127, 2434129, 25741939, 291397789, 3510328695, 44782460313, 602513988107, 8518757813637, 126179029108463, 1952609274344353, 31492811964616163, 528249539951292461, 9197240228562763687, 165923214676585626729]

cp's OEIS Frontend

A126390 a(n) = Sum_{i=0..n} 2^iB(i)binomial(n,i) where B(n) = Bell numbers A000110(n).

Table of values

List of values

cp's OEIS Frontend

A126390 a(n) = Sum_{i=0..n} 2^i*B(i)*binomial(n,i) where B(n) = Bell numbers A000110(n).

Table of values

List of values

A126390 a(n) = Sum_{i=0..n} 2^iB(i)binomial(n,i) where B(n) = Bell numbers A000110(n).