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.

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.

Terms

    a(0) =4a(1) =988a(2) =1612a(3) =3172a(4) =5332a(5) =7852a(6) =11908a(7) =18748a(8) =19276a(9) =21268a(10) =21508a(11) =25156a(12) =32188a(13) =35932a(14) =41116a(15) =41452a(16) =43108a(17) =50236a(18) =54436a(19) =55876a(20) =57412a(21) =62452a(22) =65836a(23) =71248a(24) =72748a(25) =74572a(26) =85828a(27) =88996a(28) =96772a(29) =97708

External references