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%I #24 Dec 08 2015 01:49:11
%S 0,1,2,5,151,661,521,49993,858868651,115523,72920757563,3844109,
%T 1637177,7158605959,17024617,13062611,66113257898351335849,
%U 599880481206897379,745125370039,4314028165895642655831229,30699710580827,1744795596758086587163381,2463356705098399667815003
%N Largest prime (or noncomposite) factor of the Crandall number A262961(n).
%C Computed up to n = 94 by _David Broadhurst_, and independently up to n = 67 by _Hans Havermann_ and _M. F. Hasler_.
%C At n = 95 and n = 96 we have composite factors of 157 digits with probably no divisor less than 50 digits. - _David Broadhurst_, Oct 17 2015
%H David Broadhurst, <a href="/A263413/b263413.txt">Table of n, a(n) for n = 1..94</a>
%H Hans Havermann and David Broadhurst, <a href="http://chesswanks.com/num/CrandallNumbersFactored.txt">Crandall Numbers Factored</a>
%F a(n) = A006530(A262961(n)).
%o (PARI) a(n)=A006530(A262961(n)) \\ _M. F. Hasler_, Oct 17 2015
%Y Cf. A262961.
%K nonn,hard
%O 1,3
%A _M. F. Hasler_, Oct 17 2015
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