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Pairs of central divisors of A089229(n).
3

%I #3 Mar 30 2012 18:52:33

%S 2,3,2,4,2,5,3,4,2,7,3,5,3,6,4,5,3,7,2,11,4,6,2,13,3,9,4,7,5,6,4,8,3,

%T 11,2,17,5,7,2,19,3,13,5,8,6,7,4,11,5,9,2,23,6,8,5,10,3,17,4,13,6,9,5,

%U 11,7,8,3,19,2,29,6,10,2,31,7,9,5,13,6,11,4,17,3,23,7,10,8,9,2,37,5,15,4,19

%N Pairs of central divisors of A089229(n).

%C The central divisors are the two complementary divisors closest to the square

%C root of a number, as tabulated in A162348.

%F a(2n-1)= A033676(A089229(n)). a(2n)=A033677(A089229(n)). - R. J. Mathar, Jul 19 2009

%e a(1)=2 and a(2)=3 since A089229(1)=6 with divisors 1, 2, 3, 4.

%e a(3)=2 and a(4)=4 since A089229(2)=8 with divisors 1, 2, 4, 8.

%e a(5)=2 and a(6)=5 since A089229(3)=10 with divisors 1, 2, 5, 10.

%Y Cf. A089229, A162361.

%K nonn,easy

%O 1,1

%A _Juri-Stepan Gerasimov_, Jul 17 2009

%E Missing pairs inserted by _R. J. Mathar_, Jul 19 2009