login
A145743
a(n) is the smallest composite number m such that all n numbers m+4*k^2 for k=1,2,...,n are prime.
2
9, 15, 25, 25, 247, 583, 5377, 143473, 143473, 143473, 2821813, 62087033647, 91450844347
OFFSET
1,1
COMMENTS
There is no further term up to 5*10^8.
CROSSREFS
Sequence in context: A274288 A172292 A075638 * A164384 A138193 A330947
KEYWORD
more,nonn
AUTHOR
Farideh Firoozbakht, Oct 17 2008
EXTENSIONS
a(12)-a(13) from Donovan Johnson, Nov 17 2008
STATUS
approved