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First differences of A165271.
2

%I #2 Mar 30 2012 18:51:04

%S 1,3,4,8,10,16,21,26,34,39,48,50,60,60,65,65,65,62,56,52,40,32,18,8,

%T -8,-18,-32,-40,-52,-56,-62,-65,-65,-65,-60,-60,-50,-48,-39,-34,-26,

%U -21,-16,-10,-8,-4,-3,-1,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

%N First differences of A165271.

%C a(n) = A165271(n+1) - A165271(n);

%C a(n) > 0 for n < 24;

%C a(n) < 0 for 24 <= n <= 48;

%C a(n) = 0 for n > 48.

%Y Cf. A165273.

%K sign

%O 0,2

%A _Reinhard Zumkeller_, Sep 13 2009