Number of permutations of 1..n with displacements restricted to {-5,-4,-2,0,1,3}.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =13a(5) =35a(6) =93a(7) =227a(8) =499a(9) =1185a(10) =2823a(11) =6809a(12) =16640a(13) =40117a(14) =96797a(15) =232099a(16) =556269a(17) =1338482a(18) =3218538a(19) =7747725a(20) =18645571a(21) =44845905a(22) =107873385a(23) =259405282a(24) =623911219a(25) =1500766461a(26) =3609839279a(27) =8683275206a(28) =20886151010a(29) =50237661120