343670

Appears in sequences

• Number of solutions to +-1 +- 3 +- 5 +- 7 +- ... +- (4*n-1) = 0.at n=13A292476
• Number of solutions to +- 1 +- 3 +- 5 +- 7 +- ... +- (2*n-1) = 0 or 1.at n=26A367087