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={1,3}.
A079962
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={1,3}.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =5a(6) =9a(7) =14a(8) =22a(9) =36a(10) =58a(11) =94a(12) =153a(13) =247a(14) =399a(15) =646a(16) =1045a(17) =1691a(18) =2737a(19) =4428a(20) =7164a(21) =11592a(22) =18756a(23) =30348a(24) =49105a(25) =79453a(26) =128557a(27) =208010a(28) =336567a(29) =544577
External references
- oeis: A079962