1,1

Table of n, a(n) for n=1..24.

Hugo Pfoertner, Possible determinants of 3 X 3 matrix with elements 1..9.

398 is not in the sequence because it can be expressed as det ((9 3 5)(4 8 2)(1 6 7)).

Cf. A085000, A088215, A088216, A088217.

Sequence in context: A298271 A006465 A272298 * A117550 A045287 A096526

Adjacent sequences: A088211 A088212 A088213 * A088215 A088216 A088217

fini,full,nonn

Hugo Pfoertner, Sep 23 2003

approved