186386

Appears in sequences

• Number of binary words of length n (beginning 0) with autocorrelation function 2^(n-1)+3.at n=21A045693
• a(1)=2; for n>1, a(n)=2*a(n-1)-1 if that number is composite, a(n)=a(n-1)+1 otherwise.at n=26A081869
• Numbers k for which rank of the elliptic curve y^2 = x^3 - k*x is 5.at n=4A309100
• Number of mutual-visibility sets in the n-trapezohedral graph.at n=6A389189