18343

Appears in sequences

• Numbers k such that 65*2^k+1 is prime.at n=37A032382
• a(n) = A077702(n+1)/A077702(n).at n=14A077703
• a(n) = A088418(n+1)/A088418(n).at n=14A088419
• Expansion of (7 +4*x -5*x^2 -7*x^3) / ((1-x)*(1-x^2-x^3)).at n=28A103485
• Number of permutations of length n which avoid the patterns 231, 4123.at n=11A116703
• Composite squarefree numbers n such that p(i)-9 divides n+9, where p(i) are the prime factors of n.at n=41A225709
• Triangle T(n,k) read by rows of number of ways k domicules can be placed on an n X n square (n >= 0, 0 <= k <= floor(n^2/2)).at n=14A243424
• Number of ways 4 domicules can be placed on an n X n square.at n=4A243466
• Number of ways half the maximal number of domicules can be placed on an n X n square.at n=4A243511
• Number obtained by concatenating the cubes of the digits of prime(n).at n=30A277047