A145821 Prime numbers p such that 17,p,p+1 is a Heron triangle, that is a triangle with integer sides and integer area.

89, 233, 103049, 118919033, 158366141778329, 413966186053289, 210898408132067372729, 551284565493459521033, 243376580230015368399209, 636181910862832304910809

Offset

1,1

Comments

Subsequence of A145820. The next few terms are at n = 186, 236, 522, 812, 1064 and 1292, of that sequence. A145820(1292) is a prime of 331 digits.

Links

Table of n, a(n) for n=1..10.

Crossrefs

Subsequence of A000040 and of A145820.

Sequence in context: A251079 A248745 A033257 * A354284 A142655 A140040

Adjacent sequences: A145818 A145819 A145820 * A145822 A145823 A145824

Keyword

nonn

Author

James R. Buddenhagen, Oct 20 2008

Status

approved