A131997 Array read by rows in which the n-th row contains odd numbers of all possible prime signatures with n divisors.
1, 3, 9, 27, 15, 81, 243, 45, 729, 2187, 135, 105, 6561, 225, 19683, 405, 59049, 177147, 1215, 315, 675
Offset: 1
Examples
Row 12 of A131886 is 2048 96 72 60 so here row 12 is 177147 1215 315 675.