1231932

Appears in sequences

• Number of solutions to +-1 +- 3 +- 5 +- 7 +- ... +- (4*n-1) = 0.at n=14A292476
• a(n) is the least number k such that the sequence of elements of the continued fraction of the harmonic mean of the divisors of k is palindromic with length n, or -1 if no such k exists.at n=12A349478
• Maximal coefficient of (1 + x) * (1 + x^3) * (1 + x^5) * ... * (1 + x^(2*n-1)).at n=28A350504
• Number of solutions to +- 1 +- 3 +- 5 +- 7 +- ... +- (2*n-1) = 0 or 1.at n=28A367087