4900991135domain: NAppears in sequencesTetranacci numbers A073817 without the leading term 4.at n=33A001648Sum 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=34A074081Number of matchings in the n-antiprism graph.at n=16A192742