A115886 Triangular numbers equal to the sum of a prime number with its index.

3, 91, 276, 378, 666, 1225, 2080, 2145, 2278, 3486, 4186, 4560, 5565, 8646, 11628, 17020, 18528, 21115, 22791, 23220, 25425, 27730, 32385, 34716, 41905, 42195, 43365, 56616, 69751, 74691, 79003, 93528, 93961, 94395, 98790, 105570, 111628

Offset

1,1

Links

Table of n, a(n) for n=1..37.

Example

666=T(36)=103+p(103).

Crossrefs

Cf. A115882.

Sequence in context: A374392 A115704 A066751 * A041439 A366219 A300419

Adjacent sequences: A115883 A115884 A115885 * A115887 A115888 A115889

Keyword

nonn

Author

Giovanni Resta, Feb 06 2006

Status

approved