1,2

If n=43 then 6*n^2 + 6*n + 1 = 11353 (prime).

Cf. A111251, A090563.

Sequence in context: A047490 A039072 A055977 this_sequence A047373 A039048 A105764

Adjacent sequences: A111289 A111290 A111291 this_sequence A111293 A111294 A111295

nonn

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Nov 01 2005