1,3
Total sum of the second differences of the primes (A036263) to 2^n.
Marek Wolf, Conjectures
a[n_] := Prime[2^n+2]-Prime[2^n+1]-1; a/@Range[26]
Sequence in context: A036791 A180136 A010129 * A154740 A179261 A154567
Adjacent sequences: A073047 A073048 A073049 * A073051 A073052 A073053
nonn
Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 15 2002