Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={2,4}.
A079959
Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={2,4}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =10a(6) =19a(7) =33a(8) =60a(9) =106a(10) =191a(11) =340a(12) =610a(13) =1089a(14) =1950a(15) =3485a(16) =6236a(17) =11150a(18) =19946a(19) =35670a(20) =63802a(21) =114107a(22) =204091a(23) =365018a(24) =652857a(25) =1167652a(26) =2088402a(27) =3735179a(28) =6680529a(29) =11948378
External references
- oeis: A079959