[seqfan] A[i,j] by antidiagonals 2^i * 3^j

[Jonathan Post]

1,3, 2, 9, 6, 4, 27, 18, 12, 8, 81, 54, 36, 24, 16, 243, 486, ...

not in OEIS
.
by antidiagonals f:N x N -->
(x, y) |--> 2^x 3^y
.
p.408, Topology: A Geometric Account of General Topology, Homotopy Type,
and the Fundamental Groupoid, Ronald Brown, John Wiley
.