A059039 Triangle in A059037 read by rows in natural order.
1, 1, 2, 1, 5, 7, 1, 17, 27, 31, 1, 69, 130, 164, 174, 1, 373, 729, 1020, 1158, 1194, 1, 2491, 4961, 7166, 8798, 9544, 9729, 1, 20020, 39995, 58711, 74202, 85318, 90300, 91531, 1, 186814, 373549, 552245, 709994, 836961, 926680, 966720
Offset: 0