0,2
Number of trees of height n generated by unary and binary composition. - Claude Lenormand (claude.lenormand(AT)free.fr), Sep 05 2001
Index entries for sequences of form a(n+1)=a(n)^2 + ...
a(n) = a(n-1)^2 + 2 a(n-1) sqrt(a(n-1)-1) + a(n-1) for n > 0. [Charles R Greathouse IV, Dec 29 2011]
(PARI) a(n)=if(n, my(k=a(n-1)); k^2+2*k*sqrtint(k-1)+k, 1) \\ Charles R Greathouse IV, Dec 29 2011
Sequence in context: A126451 A132341 A069994 * A086675 A057119 A037267
Adjacent sequences: A063570 A063571 A063572 * A063574 A063575 A063576
nonn
N. J. A. Sloane (njas(AT)research.att.com), Sep 06 2001
