A117402 - cp's OEIS frontend

A117402 Row sums of triangle A117401: a(n) = Sum_{k=0..n} 2^((n-k)*k) for n>=0.

n	a(n)
0	1
1	2
2	4
3	10
4	34
5	162
6	1090
7	10370
8	139522
9	2654722
10	71435266
11	2718435330
12	146299424770
13	11134711111682
14	1198484887715842
15	182431106853797890
16	39271952800672710658
17	11955805018770498519042
18	5147453397489773531365378

[1, 2, 4, 10, 34, 162, 1090, 10370, 139522, 2654722, 71435266, 2718435330, 146299424770, 11134711111682, 1198484887715842, 182431106853797890, 39271952800672710658, 11955805018770498519042, 5147453397489773531365378]

cp's OEIS Frontend

A117402 Row sums of triangle A117401: a(n) = Sum_{k=0..n} 2^((n-k)*k) for n>=0.

Table of values

List of values