1135290domain: NAppears in sequencesNumbers m such that 16*m*(3*m+1)+1 is a square.at n=6A217855Composite squarefree numbers k = Product_{i} p_i such that k^2 is divisible by Sum_{i} p_i^2.at n=24A332738Oblong numbers which are products of six distinct primes.at n=25A359127