A254744 - cp's OEIS frontend

A254744 a(n) = 2^n * Sum_{k=1 .. n-1} a(k) * a(n-1-k) with a(0) = 1.

n	a(n)
0	1
1	2
2	16
3	288
4	10240
5	700416
6	92864512
7	24184487936
8	12484798840832
9	12835745584644096
10	26339606633209921536
11	107993030830149951553536
12	885112171099428768672907264
13	14505223494706550858367937544192
14	475365227058478388903633481696804864

[1, 2, 16, 288, 10240, 700416, 92864512, 24184487936, 12484798840832, 12835745584644096, 26339606633209921536, 107993030830149951553536, 885112171099428768672907264, 14505223494706550858367937544192, 475365227058478388903633481696804864]

cp's OEIS Frontend

A254744 a(n) = 2^n * Sum_{k=1 .. n-1} a(k) * a(n-1-k) with a(0) = 1.

Table of values

List of values