133169152

Appears in sequences

• Binomial transform of A084263.at n=21A084264
• Number of Pythagorean triples mod 2^n; i.e., number of solutions to x^2 + y^2 = z^2 mod 2^n.at n=13A091143
• S-perfect numbers.at n=33A118372
• a(n) = 4^(n-2) * (n+1)^(n-4) * (3*n^2 + 13*n + 16).at n=7A251584
• Non-unitary amicable numbers.at n=42A259037
• Smaller of a non-unitary amicable pair.at n=21A259038