A200658 - OEIS

%I #11 Mar 31 2012 10:22:18

%S 52488,15336,-20088,219375,-293625,981504,-1285632,-474552,1367631

%N a(n) = A200656(n)^3 - A200657(n)^2.

%C For x values see A200656.

%C For y values see A200657.

%C Definition: Secondary terms occured when existed such integer k that A200656 is divisible by k^2 and A200657 is divisible by k^3 and A200658 is divisible by k^6.

%C Terms free of such k are primary terms.

%C Secondary terms are: a(6)=a(2)*2^6, a(7)=a(3)*2^6.

%C A200218 is subset of this sequence.

%Y Cf. A200218,  A200656, A200657.

%K sign

%O 1,1

%A _Artur Jasinski_, Nov 20 2011