Number T(m,n) of permutations of [n] avoiding the consecutive pattern 12...(m+1)(m+3)(m+2), where m, n >= 0; array read by ascending antidiagonals.
A327722
Number T(m,n) of permutations of [n] avoiding the consecutive pattern 12...(m+1)(m+3)(m+2), where m, n >= 0; array read by ascending antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =2a(9) =5a(10) =1a(11) =1a(12) =2a(13) =6a(14) =16a(15) =1a(16) =1a(17) =2a(18) =6a(19) =23a(20) =63a(21) =1a(22) =1a(23) =2a(24) =6a(25) =24a(26) =110a(27) =296a(28) =1a(29) =1
External references
- oeis: A327722