125609

Appears in sequences

• Numbers k = p*q*r, with odd primes p < q < r, such that Sister Beiter's cyclotomic coefficient conjecture is false.at n=1A146961
• a(n) = A322237(n) / (n*(n+1)/2), where A322237(n) = [x^(n-1)] Product_{k=1..n} (k + x + k*x^2), for n >= 1.at n=7A322236
• Number of free polyominoes with n squares, having 180-degree rotational symmetry about the center of a square, and no other symmetry.at n=25A351615