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}.
A079816
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}.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =12a(7) =20a(8) =34a(9) =59a(10) =102a(11) =175a(12) =300a(13) =515a(14) =885a(15) =1521a(16) =2613a(17) =4488a(18) =7709a(19) =13243a(20) =22750a(21) =39081a(22) =67134a(23) =115324a(24) =198107a(25) =340315a(26) =584604a(27) =1004250a(28) =1725130a(29) =2963480
External references
- oeis: A079816