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A113031
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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).
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2
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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
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| Triangle begins:
1
2 3
3 7 29
4 9 289 332929...
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CROSSREFS
| Sequence in context: A121875 A036251 A176022 * A127582 A157144 A096714
Adjacent sequences: A113028 A113029 A113030 * A113032 A113033 A113034
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KEYWORD
| nonn,tabl,changed
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 04 2006
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EXTENSIONS
| Corrected and extended by Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 07 2006
a(32) from Max Alekseyev (maxale(AT)gmail.com), Feb 13 2012
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