A203687 - cp's OEIS frontend

A203687 Vandermonde sequence using x^2 - x*y + y^2 applied to (1,2,6,...,n!).

n	a(n)
1	1
2	3
3	2604
4	358528427712
5	12031987952968690199349362688
6	370754012130869137189065686833099372581714820267297996800
7	84815080863788633556908198622861272366206888854108620395778065239463085651541566677024367443968000000

[1, 3, 2604, 358528427712, 12031987952968690199349362688, 370754012130869137189065686833099372581714820267297996800, 84815080863788633556908198622861272366206888854108620395778065239463085651541566677024367443968000000]

cp's OEIS Frontend

A203687 Vandermonde sequence using x^2 - x*y + y^2 applied to (1,2,6,...,n!).

Table of values

List of values