18482

Appears in sequences

• Related to representation as sums of squares.at n=30A002292
• Numbers whose concatenation of prime factors (with multiplicity) is a square.at n=36A038693
• a(n) is the smallest k such that number of non-unitary prime divisors of central binomial coefficient, A000984(k) = C(2*k,k) equals n.at n=27A081393
• A156977/3.at n=25A164565
• Number of (n+1)X(2+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.at n=7A253320
• Numbers k such that (76*10^k + 113)/9 is prime.at n=19A294944