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A087311 a(1) = 2; for n>1, a(n) = smallest number == 1 (mod a(n-1)) with a prime signature of n. 1
2, 3, 7, 169, 677, 1355, 2711, 4304496906163, 1852869361516769972676380161, 66703297014603719016349685797, 400219782087622314098098114783, 31217143002834540499651652953075, 1498422864136057943983279341747601 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

a(3) = 7 has the prime signature of 3 and a(4) = 169 has the prime signature of 4 and 169 == 1 (mod 7).

CROSSREFS

Cf. A087312.

Sequence in context: A173913 A007013 A103405 * A053924 A130060 A053942

Adjacent sequences:  A087308 A087309 A087310 * A087312 A087313 A087314

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 02 2003

EXTENSIONS

More terms from David Wasserman (wasserma(AT)spawar.navy.mil), May 02 2005

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Last modified February 15 11:25 EST 2012. Contains 205777 sequences.