A201711 Primes of the form 10n^2 + 9.

19, 499, 1009, 1699, 8419, 9619, 14449, 21169, 24019, 28099, 30259, 34819, 38449, 49009, 53299, 68899, 84649, 94099, 102019, 118819, 141619, 156259, 169009, 176899, 184969, 187699, 240259, 259219, 268969, 306259, 309769, 327619

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Mathematica

Select[Table[10n^2+9, {n, 0, 1000}], PrimeQ]

Prog

(Magma) [a: n in [0..300] | IsPrime(a) where a is 10*n^2+9];

Crossrefs

Sequence in context: A159248 A348321 A284220 * A243784 A158583 A009081

Adjacent sequences: A201708 A201709 A201710 * A201712 A201713 A201714

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 04 2011

Status

approved