129025

Appears in sequences

• Counts where both the odd composites (starting from 1) 1 mod 4 and 3 mod 4 are equal.at n=21A093182
• a(n) = 63*2^(n+1) + 1.at n=10A196657
• 9-step Fibonacci sequence starting with 0,0,0,0,0,0,1,0,0.at n=26A251747