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={1,2}.
A079963
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={1,2}.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =4a(6) =7a(7) =10a(8) =14a(9) =21a(10) =34a(11) =55a(12) =86a(13) =131a(14) =200a(15) =310a(16) =485a(17) =757a(18) =1174a(19) =1815a(20) =2810a(21) =4362a(22) =6778a(23) =10524a(24) =16323a(25) =25310a(26) =39260a(27) =60924a(28) =94549a(29) =146706
External references
- oeis: A079963