A180268 Numbers n, not divisible by 3, 5, 7 or 11, such that A000203(n)-n-1 and 2*n+1-A000203(n) are prime numbers.

4, 988, 1612, 3172, 5332, 7852, 11908, 18748, 19276, 21268, 21508, 25156, 32188, 35932, 41116, 41452, 43108, 50236, 54436, 55876, 57412, 62452, 65836, 71248, 72748, 74572, 85828, 88996, 96772, 97708, 99292, 103948, 104956, 105772, 110812, 116356, 116428

Offset

1,1

Links

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

Crossrefs

Cf. A157449, A175727 and A179945.

Sequence in context: A332194 A364276 A006030 * A087365 A024059 A069920

Adjacent sequences: A180265 A180266 A180267 * A180269 A180270 A180271

Keyword

nonn,less

Author

Alexey Galkin (fetch91(AT)gmail.com), Aug 23 2010

Extensions

Divisibility requirement added to definition to match the sequence; 4 and terms beyond 7852 added - R. J. Mathar, Aug 25 2010

Status

approved