A306728 - cp's OEIS frontend

A306728 a(n) = Product_{i=1..n, j=1..n} (i(i+1) + j(j+1)).

n	a(n)
0	1
1	4
2	3072
3	4682022912
4	62745927042654535680
5	22033340103629170301586112512000000
6	479715049773154880180722813201712394999926095872000000
7	1318058833735625830065875826842622254472987373414662267314001234660163584000000

[1, 4, 3072, 4682022912, 62745927042654535680, 22033340103629170301586112512000000, 479715049773154880180722813201712394999926095872000000, 1318058833735625830065875826842622254472987373414662267314001234660163584000000]

cp's OEIS Frontend

A306728 a(n) = Product_{i=1..n, j=1..n} (i(i+1) + j(j+1)).

Table of values

List of values

cp's OEIS Frontend

A306728 a(n) = Product_{i=1..n, j=1..n} (i*(i+1) + j*(j+1)).

Table of values

List of values

A306728 a(n) = Product_{i=1..n, j=1..n} (i(i+1) + j(j+1)).