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

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =35a(6) =107a(7) =257a(8) =585a(9) =1423a(10) =3505a(11) =8633a(12) =21808a(13) =55437a(14) =138452a(15) =342488a(16) =850499a(17) =2117997a(18) =5272078a(19) =13136438a(20) =32770428a(21) =81689634a(22) =203427274a(23) =506595905a(24) =1261968342a(25) =3143705888a(26) =7831363780a(27) =19510741790a(28) =48608257139a(29) =121091284415