OFFSET
1,1
FORMULA
a(n) = 4*A137781(n). - Wesley Ivan Hurt, Mar 27 2015
EXAMPLE
a(3) = 160 because 2^5 + 2^7 = 160.
MAPLE
A137389:=n->2^ithprime(n)+2^ithprime(n+1): seq(A137389(n), n=1..20); # Wesley Ivan Hurt, Mar 27 2015
MATHEMATICA
f[n_] := 2^Prime[n] + 2^Prime[n + 1]; Array[f, 18] (* Robert G. Wilson v *)
Table[2^Prime[n] + 2^Prime[n + 1], {n, 18}] (* Stefan Steinerberger, Apr 12 2008 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Max Sills, Apr 10 2008
EXTENSIONS
More terms from N. J. A. Sloane, Apr 10 2008
STATUS
approved