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={0,1,4}.
A079956
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={0,1,4}.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =0a(6) =2a(7) =2a(8) =1a(9) =3a(10) =5a(11) =3a(12) =6a(13) =10a(14) =9a(15) =12a(16) =21a(17) =22a(18) =27a(19) =43a(20) =52a(21) =61a(22) =91a(23) =117a(24) =140a(25) =195a(26) =260a(27) =318a(28) =426a(29) =572
External references
- oeis: A079956