44353

Appears in sequences

• Semiprimes (A001358) whose digit reversal is a square.at n=38A115710
• Generator for the finite sequence A038178.at n=18A135480
• Least number having exactly two odd prime factors that differ by 2*n^2.at n=35A190052
• Number of (n+2)X(1+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 3.at n=11A255794
• Composites whose prime factorization in base 8 is an anagram of the number in base 8.at n=19A260052
• G.f. satisfies: A(x) = A( -x/(1-4*x) ) / sqrt(1-4*x), with A(0)=1.at n=9A264231
• a(n) = 6*binomial(n,4) + 2*binomial(n,2) + 1.at n=22A341703
• a(0) = 1; a(n) = -a(n-1) + 2 * Sum_{k=0..floor((n-1)/2)} a(k) * a(n-2*k-1).at n=18A351938