OFFSET
0,4
LINKS
Daniel Starodubtsev, Table of n, a(n) for n = 0..1000
FORMULA
a(n) = A013597(2*n), n >= 0. - A.H.M. Smeets, Aug 13 2019
MAPLE
seq(nextprime(4^i)-4^i, i=0..100);
MATHEMATICA
np4[n_]:=Module[{c=4^n}, NextPrime[c]-c]; Array[np4, 70, 0] (* Harvey P. Dale, Jan 23 2012 *)
PROG
(PARI) a(n) = nextprime(4^n)-4^n; \\ Michel Marcus, Aug 13 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
James Kilfiger (mapdn(AT)csv.warwick.ac.uk)
STATUS
approved