Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the consecutive pattern 3412; triangle T(n,k), n>=0, 0<=k<=max(0,floor(n/2-1)), read by rows.
A264319
Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the consecutive pattern 3412; triangle T(n,k), n>=0, 0<=k<=max(0,floor(n/2-1)), read by rows.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =1a(6) =110a(7) =10a(8) =631a(9) =88a(10) =1a(11) =4223a(12) =794a(13) =23a(14) =32301a(15) =7639a(16) =379a(17) =1a(18) =277962a(19) =79164a(20) =5706a(21) =48a(22) =2657797a(23) =885128a(24) =84354a(25) =1520a(26) =1a(27) =27954521a(28) =10657588a(29) =1266150
External references
- oeis: A264319