501380

Appears in sequences

• Tetranacci numbers A073817 without the leading term 4.at n=19A001648
• Tetranacci numbers with different initial conditions: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) starting with a(0)=4, a(1)=1, a(2)=3, a(3)=7.at n=20A073817
• Sum of determinants of 3rd-order principal minors of powers of inverse of tetramatrix ((1,1,0,0),(1,0,1,0),(1,0,0,1),(1,0,0,0)).at n=20A074081
• Floor((quadronacci ratio)^n).at n=19A125898
• Number of matchings in the n-antiprism graph.at n=9A192742
• Number of (n+1) X (1+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=12A231356