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={0,2,3}.
A079955
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={0,2,3}.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =2a(7) =2a(8) =3a(9) =3a(10) =5a(11) =6a(12) =9a(13) =11a(14) =15a(15) =19a(16) =26a(17) =34a(18) =46a(19) =60a(20) =80a(21) =105a(22) =140a(23) =185a(24) =246a(25) =325a(26) =431a(27) =570a(28) =756a(29) =1001
External references
- oeis: A079955