OFFSET
1,1
COMMENTS
The next term -- a(11) -- has 97 digits. - Harvey P. Dale, Nov 15 2021
LINKS
Robert Israel, Table of n, a(n) for n = 1..15
FORMULA
a(n) = 6 * 10^A103025(n) - 7. - Robert Israel, Jan 22 2024
MAPLE
select(isprime, [seq(6*10^k-7, k=1..100)]); # Robert Israel, Jan 22 2024
MATHEMATICA
able[10 FromDigits[PadRight[{5}, n, 9]]+3, {n, 50}], PrimeQ] (* Harvey P. Dale, Nov 15 2021 *)
PROG
(Magma) [a: n in [0..250]|IsPrime(a) where a is 6*10^n-7]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Dec 10 2010
STATUS
approved