A113031 Triangle read by rows: n-th row begins with n and contains n terms with the same prime signature such that the (r+1)-th term == 1 (mod r-th term).

1, 2, 3, 3, 7, 29, 4, 9, 289, 332929, 5, 11, 23, 47, 283, 6, 55, 111, 334, 335, 671, 7, 29, 59, 709, 2837, 22697, 590123, 8, 4913, 2084349468684419, 24848244676397648518313556708104734780186593641363

Offset: 1

Author

Amarnath Murthy, Jan 04 2006

Keywords

• nonn
• tabl

Examples

			Triangle begins:
1
2 3
3 7 29
4 9 289 332929...
		

Extensions

Corrected and extended by Joshua Zucker, May 07 2006

a(32) from Max Alekseyev, Feb 13 2012