A116036 n+p(n)+p(p(n)) is a prime, where p(n) denotes the n-th prime.

3, 5, 7, 13, 17, 21, 25, 41, 49, 55, 65, 73, 79, 91, 93, 95, 97, 101, 107, 113, 127, 129, 137, 149, 157, 159, 163, 167, 179, 183, 187, 191, 203, 205, 213, 221, 227, 253, 267, 271, 287, 307, 313, 323, 331, 333, 337, 349, 365, 369, 373, 377, 387, 389, 421, 429

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Example

7+p(7)+p(p(7)) = 83 (prime).

Crossrefs

Cf. A115996.

Sequence in context: A346645 A107360 A058341 * A304122 A032397 A028879

Adjacent sequences: A116033 A116034 A116035 * A116037 A116038 A116039

Keyword

nonn

Author

Giovanni Resta, Feb 13 2006

Status

approved