A118191 - cp's OEIS frontend

A118191 Row sums of triangle A118190: a(n) = Sum_{k=0..n} 5^(k*(n-k)) for n>=0.

n	a(n)
0	1
1	2
2	7
3	52
4	877
5	32502
6	2740627
7	507843752
8	214111484377
9	198376465625002
10	418186492923828127
11	1937270172119160156252
12	20419262349796295263671877
13	472966350615029335022460937502
14	24925857360591180741786959228515627

[1, 2, 7, 52, 877, 32502, 2740627, 507843752, 214111484377, 198376465625002, 418186492923828127, 1937270172119160156252, 20419262349796295263671877, 472966350615029335022460937502, 24925857360591180741786959228515627]

cp's OEIS Frontend

A118191 Row sums of triangle A118190: a(n) = Sum_{k=0..n} 5^(k*(n-k)) for n>=0.

Table of values

List of values