1862875

Appears in sequences

• Tetranacci numbers A073817 without the leading term 4.at n=21A001648
• 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=22A073817
• 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=22A074081
• Number of matchings in the n-antiprism graph.at n=10A192742