cp's OEIS Frontend

A248713 a(1)=1; starting with n>1, concatenate distinct divisors which are in A050376 in increasing order and repeat until a term of A050376 is reached (a(n)=0 if no term of A050376 is ever reached).

%I A248713 #16 Oct 13 2014 12:27:56
%S A248713 1,2,3,4,5,23,7,731173,9,25,11,31397,13,313,1129,16,17,29,19,59,37,
%T A248713 211,23,731173,25,3251,313,47,29,547,31,313289,311,31397,1129,49,37,
%U A248713 373,313,961,41,379,43,3137,59,223,47,479,49,71443,317,31123,53,239,773
%N A248713 a(1)=1; starting with n>1, concatenate distinct divisors which are in A050376 in increasing order and repeat until a term of A050376 is reached (a(n)=0 if no term of A050376 is ever reached).
%C A248713 Fermi-Dirac analog of A037274 (terms of A050376 are Fermi-Dirac primes).
%H A248713 Hiroaki Yamanouchi, <a href="/A248713/b248713.txt">Table of n, a(n) for n = 1..100</a>
%e A248713 We have 40 = 2*4*5 -> 245 = 5*49 -> 549 = 9*61 -> 961 is in A050376. So a(40) = 961.
%Y A248713 Cf. A037274, A050376, A084318.
%K A248713 nonn,base
%O A248713 1,2
%A A248713 _Vladimir Shevelev_, Oct 12 2014
%E A248713 a(8) and a(34) corrected by _Hiroaki Yamanouchi_, Oct 13 2014