71582789

Appears in sequences

• a(n) = ceiling(2^(n+1)/n).at n=29A053639
• G.f. x^2*(-1+x+x^2)/((1-x)*(2*x-1)*(x+1)*(x^2+1)).at n=30A115851
• a(n) = ceiling(4^n/n).at n=14A129788
• a(0)=0; a(n+1) = 2*a(n) + period 4:repeat 0,1,-2,1.at n=30A181586
• Number of (n+3) X (1+3) 0..1 arrays with each row and column divisible by 15, read as a binary number with top and left being the most significant bits.at n=26A262450