70888

Appears in sequences

• Tetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4), with initial conditions a(0..3) = (0, 0, 1, 0).at n=21A001631
• Number of benzenoids with 22 hexagons, C_(2h) symmetry and containing 2n carbon atoms.at n=8A123105
• Modified quadranacci series.at n=54A274759
• G.f. satisfies A(x) = 1 + x*A(x) + x^3*A(x)^5.at n=12A364539
• Number of palindromic binary strings of length n having no 4-runs of 1's.at n=33A382478