A353021 - cp's OEIS frontend

A353021 a(n) = Sum_{l=1..n} Sum_{k=1..l} Sum_{j=1..k} Sum_{i=1..j} (lkj*i)^2.

n	a(n)
0	0
1	1
2	341
3	13013
4	196053
5	1733303
6	10787231
7	52253971
8	209609235
9	725520510
10	2230238010
11	6217887390
12	15973440990
13	38276304066
14	86383520146
15	185042663146
16	378620563178
17	743881306623
18	1409531082531
19	2585397711611
20	4605062303611

[0, 1, 341, 13013, 196053, 1733303, 10787231, 52253971, 209609235, 725520510, 2230238010, 6217887390, 15973440990, 38276304066, 86383520146, 185042663146, 378620563178, 743881306623, 1409531082531, 2585397711611, 4605062303611]

cp's OEIS Frontend

A353021 a(n) = Sum_{l=1..n} Sum_{k=1..l} Sum_{j=1..k} Sum_{i=1..j} (lkj*i)^2.

Table of values

List of values

cp's OEIS Frontend

A353021 a(n) = Sum_{l=1..n} Sum_{k=1..l} Sum_{j=1..k} Sum_{i=1..j} (l*k*j*i)^2.

Table of values

List of values

A353021 a(n) = Sum_{l=1..n} Sum_{k=1..l} Sum_{j=1..k} Sum_{i=1..j} (lkj*i)^2.