Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=3, r=3, I={-2,2}.
A079992
Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=3, r=3, I={-2,2}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =9a(5) =19a(6) =49a(7) =100a(8) =233a(9) =503a(10) =1166a(11) =2580a(12) =5884a(13) =13092a(14) =29622a(15) =66281a(16) =149569a(17) =335524a(18) =755737a(19) =1697149a(20) =3819301a(21) =8582469a(22) =19306314a(23) =43397191a(24) =97600441a(25) =219421360a(26) =493425528a(27) =1109386496a(28) =2494606984a(29) =5608933040
External references
- oeis: A079992