25690

Appears in sequences

• Numbers m such that 3*2^m - 1 is prime.at n=35A002235
• Expansion of (1-2*x-3*x^2-(1-x)*sqrt(1-2*x-7*x^2))/(8*x^3).at n=10A122877
• Numbers n such that 2^(2*n)+2*n+1 is a prime.at n=5A173053
• Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101.at n=6A260923
• Number of (n+2) X (7+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101.at n=3A260926
• Expansion of Sum_{k>=1} x^k*(1 + x^k)/(1 - x^k)^4.at n=39A320941
• Primitive terms of A388028.at n=48A388030