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%I #4 Mar 30 2012 18:51:57
%S 0,2,10,21,110,233,1220,2584,13530,28657,150050,317811,1664080,
%T 3524578,18454930,39088169,204668310,433494437,2269806340,4807526976,
%U 25172538050,53316291173,279167724890,591286729879,3096017511840
%N First differences of A137976 after having added two leading ones.
%F a(n)= A137986(n)-A137986(n-1), n>=2.
%F a(2n)= 2*A102312(n)= 10*A049666(n). a(2n+1)= A134490(n).
%K nonn
%O 0,2
%A _Paul Curtz_, May 07 2008
%E Edited and extended by _R. J. Mathar_, Jul 28 2008
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