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A161927 a(n) = index of second occurrence of A161926(n) in A114381. 3

%I #3 Mar 30 2012 17:28:02

%S 14,348,2364,5350,5649,7022,9662,11028,14245,21305,23503,23753,25088,

%T 25479,31897,32314,33677,34892,40522,48343,48733,60103,62422,62793,

%U 62855,63417,64601,66448,68341,73028,82509,87921,95822,99480,100574

%N a(n) = index of second occurrence of A161926(n) in A114381.

%H Klaus Brockhaus, <a href="/A161927/b161927.txt">Table of n, a(n) for n=1..222.</a>

%e A161926(1) = 991 = A114381(11) = A114381(14), hence a(1) = 14; A161926(1) = 712363 = A114381(654) = A114381(2364), hence a(3) = 2364.

%o (PARI) Cf. program in A161926.

%Y Cf. A114381, A161926 (numbers occurring at least twice in A114381).

%K nonn

%O 1,1

%A _Klaus Brockhaus_, Jul 01 2009

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Last modified February 24 07:07 EST 2024. Contains 370294 sequences. (Running on oeis4.)