1,2

In dex entries for sequences of form a(n+1)=a(n)^2 + ...

a(2) = a(1)^2 + (-1)^2 * 2*(2+1)/2 = 1*1 + 1*3 = 4;

a(3) = a(2)^2 + (-1)^3 * 3*(3+1)/2 = 4*4 - 3*2 = 10;

Sequence in context: A143047 A125855 A098449 this_sequence A003086 A102958 A085649

Adjacent sequences: A118375 A118376 A118377 this_sequence A118379 A118380 A118381

nonn

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 16 2006

Corrected by Don Reble (djr(AT)nk.ca), Nov 22 2006