A082472 - cp's OEIS frontend

A082472 a(1) = 1, a(n) = Sum_{k=1..n-1} a(k)*2^k.

n	a(n)
1	1
2	2
3	10
4	90
5	1530
6	50490
7	3281850
8	423358650
9	108803173050
10	55816027774650
11	57211428469016250
12	117226216933014296250
13	480275810774559571736250
14	3934899717675966571235096250
15	64473331874120712269687052056250

[1, 2, 10, 90, 1530, 50490, 3281850, 423358650, 108803173050, 55816027774650, 57211428469016250, 117226216933014296250, 480275810774559571736250, 3934899717675966571235096250, 64473331874120712269687052056250]

cp's OEIS Frontend

A082472 a(1) = 1, a(n) = Sum_{k=1..n-1} a(k)*2^k.

Table of values

List of values