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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

( A007520(n)+1 )/2.
1

%I #7 Mar 31 2012 10:25:40

%S 2,6,10,22,30,34,42,54,66,70,82,90,106,114,126,142,154,166,174,190,

%T 210,222,234,246,250,262,274,282,286,294,310,322,330,342,346,370,394,

%U 406,414,430,442,454,474,486,510,526,546,562,582,586,594

%N ( A007520(n)+1 )/2.

%F a(n) = A186297(n)+1.

%K nonn

%O 1,1

%A _Marco Matosic_, Feb 17 2011