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A114789
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a(1) = 1, a(2) = 3 and thereafter a(n) is the smallest number congruent to 1 mod a(n-1) and having the prime signatute of n.
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2
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1, 3, 7, 169, 677, 1355, 2711, 4304496906163, 1852869361516769972676380161, 66703297014603719016349685797, 400219782087622314098098114783, 31217143002834540499651652953075, 307176687147891878516572265058259
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| a(4) = 169 = 13^2 has a prime signature of 4 = 2^2 and 169 == 1 (mod 7 = a(3)).
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CROSSREFS
| Sequence in context: A006031 A119958 A031881 * A128273 A105763 A132564
Adjacent sequences: A114786 A114787 A114788 * A114790 A114791 A114792
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 05 2006
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EXTENSIONS
| Corrected and extended by Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 07 2006
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