A130178 Triangular numbers which are the average of two consecutive primes.

6, 15, 21, 45, 105, 120, 231, 300, 351, 465, 741, 780, 861, 1176, 1431, 1485, 3081, 3240, 3321, 3828, 4005, 4278, 5460, 6786, 6903, 7140, 7381, 7503, 7875, 8001, 10731, 11175, 11325, 11781, 12246, 12561, 13530, 13695, 14535, 14706, 17205, 17391

Offset: 1

Author

Zak Seidov, May 14 2007

Keywords

• nonn

Comments

Intersection of A000217 (triangular numbers) and A024675 (average of two consecutive primes).

Examples

			6-/+1, 15-/+2,..., 300-/+7 are pairs of consecutive primes.
		

Links

• Zak Seidov, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000217, A024675.