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A182352
Primes of the form n*2^n - 3.
4
5, 61, 157, 229373, 1048573, 2228221, 584115552253, 10445360463869, 1448241753615514100500122329229605507956733, 8380834989110329694147210304728253347914979574441574397
OFFSET
1,1
COMMENTS
These are similar to the Woodall primes, A050918, which are primes of the form n*2^n-1.
EXAMPLE
5 = 2*2^2 - 3; 61 = 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
Cf. A050918.
Sequence in context: A174053 A107191 A321616 * A142643 A201848 A087871
KEYWORD
nonn
AUTHOR
Patrick Devlin, Apr 25 2012
STATUS
approved