1864136

Appears in sequences

• A Jacobsthal trisection.at n=8A093134
• Numbers k such that A003313(k) = A003313(9*k).at n=6A116463
• a(n) = 2*a(n-1) - a(n-3) + 2*a(n-4).at n=21A135350
• Number of (n+3) X (1+3) 0..1 arrays with each row and column divisible by 9, read as a binary number with top and left being the most significant bits.at n=20A262333
• a(n) = (n^n + n*(-1)^n)/(n + 1).at n=7A320453
• a(n+3) = 2^n - a(n), a(0)=a(2)=1, a(1)=0 for n >= 0.at n=24A328881