A251684 - cp's OEIS frontend

A251684 G.f.: exp( Sum_{n>=1} A047863(n)x^n/n ), where A047863(n) = Sum_{k=0..n} binomial(n, k) (2^k)^(n-k).

n	a(n)
0	1
1	2
2	5
3	16
4	69
5	426
6	3947
7	55612
8	1177747
9	36816650
10	1676270109
11	110202314208
12	10408422663015
13	1407329003121294
14	271801891072128621
15	74846096423770137324
16	29351301902680241116593
17	16374214768286861089202358
18	12985582377076992552497257703
19	14629438237685095017820000611400

[1, 2, 5, 16, 69, 426, 3947, 55612, 1177747, 36816650, 1676270109, 110202314208, 10408422663015, 1407329003121294, 271801891072128621, 74846096423770137324, 29351301902680241116593, 16374214768286861089202358, 12985582377076992552497257703, 14629438237685095017820000611400]

cp's OEIS Frontend

A251684 G.f.: exp( Sum_{n>=1} A047863(n)x^n/n ), where A047863(n) = Sum_{k=0..n} binomial(n, k) (2^k)^(n-k).

Table of values

List of values

cp's OEIS Frontend

A251684 G.f.: exp( Sum_{n>=1} A047863(n)*x^n/n ), where A047863(n) = Sum_{k=0..n} binomial(n, k) * (2^k)^(n-k).

Table of values

List of values

A251684 G.f.: exp( Sum_{n>=1} A047863(n)x^n/n ), where A047863(n) = Sum_{k=0..n} binomial(n, k) (2^k)^(n-k).