A063399 Main diagonal of arrays A063180 and A063181.

1, 1, 7, 115, 3205, 138345, 8543519, 714313647, 77657039081, 10644520988729, 1795436642957911, 365404877299993475, 88285106031863804877, 24979640229199673829201, 8181329846390271384540511, 3070780080199883964109428031, 1309389328134899673857450461905

Offset: 1

Author

Floor van Lamoen, Jul 16 2001

Keywords

• easy
• nonn

Extensions

Offset corrected and more terms from Sean A. Irvine, Apr 23 2023