116072

Appears in sequences

• a(n+3) = a(n+2) + a(n+1) + a(n) - 4.at n=20A000803
• Tetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4), with a(0)=a(1)=0, a(2)=1, a(3)=2.at n=20A001630
• Rook polynomials.at n=18A004306
• Modified quadranacci series.at n=56A274759
• Number of palindromic binary strings of length n having no 4-runs of 1's.at n=36A382478