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={-2,0,2}.
A079986
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={-2,0,2}.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =4a(5) =0a(6) =16a(7) =0a(8) =49a(9) =0a(10) =169a(11) =0a(12) =576a(13) =0a(14) =1936a(15) =0a(16) =6561a(17) =0a(18) =22201a(19) =0a(20) =75076a(21) =0a(22) =254016a(23) =0a(24) =859329a(25) =0a(26) =2907025a(27) =0a(28) =9834496a(29) =0
External references
- oeis: A079986