25417

Appears in sequences

• Interprimes which are of the form s*prime, s=7.at n=27A075282
• Numbers n such that F(2*n - 1) is prime, where F(m) is a Fibonacci number.at n=30A117595
• S-D transform of Catalan numbers A000108.at n=10A121908
• Composite numbers coprime to 6 such that A179382(n) = A000265(n-1), the odd part of n-1.at n=39A225913
• Number of 2 X 2 matrices with all elements in {-n,..,0,..,n} with permanent = determinant * n.at n=37A280407
• Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UU, HH and DD.at n=19A329671