A variant of A067721 with a different beginning; see A067721 for further information. 1, 4, 2, 9, 1, 3, 8, 25, 4, 36, 18, 1, 2, 64, 6, 81, 16, 4, 50, 121, 1, 20, 72, 9, 36, 196, 2
2 seqfan posts