A059785 - OEIS

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A059785

a(n+1) = prevprime(a(n)^2). Largest prime prior to the square of previous prime. Initial value = 2.

6

2, 3, 7, 47, 2207, 4870843, 23725111530599, 562880917139361624513298747, 316834926879648887020732217199607668221645859671769857

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OFFSET

1,1

COMMENTS

The next term is too large to show here - see the b-file.

LINKS

Franklin T. Adams-Watters, Table of n, a(n) for n = 1..12

MATHEMATICA

NestList[NextPrime[#^2, -1]&, 2, 10] (* Harvey P. Dale, Jan 16 2016 *)

CROSSREFS

Cf. A006992, A055496, A005384, A005385, A059784.

Sequence in context: A257108 A274385 A075461 * A271041 A270402 A253574

Adjacent sequences: A059782 A059783 A059784 * A059786 A059787 A059788

KEYWORD

nonn

AUTHOR

Labos Elemer, Feb 22 2001

EXTENSIONS

Offset and some values corrected by Franklin T. Adams-Watters, Jul 30 2009

STATUS

approved