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A182354
Primes of the form n*2^n + 3.
1
3, 5, 11, 67, 163, 10243, 22531, 7516192771, 43980465111043, 142788163609707759784588649053552643, 2637188343637273091841153207596203638787
OFFSET
1,1
COMMENTS
These are similar to the Woodall primes, A050918, which are primes of the form n*2^n - 1.
EXAMPLE
3 = 0*2^0 + 3; 5 = 1*2^1 + 3; 11 = 2*2^2 + 3; 67 = 4*2^4 + 3
MAPLE
#choose N large, then S is the desired set
f:=n->n*2^n + 3:
S:={}:
for n from 0 to N do if(isprime(f(n))) then S:=S union {f(n)}: fi: od
CROSSREFS
KEYWORD
nonn
AUTHOR
Patrick Devlin, Apr 25 2012
STATUS
approved