Total number of 231 patterns in the set of permutations avoiding 123.
A210064
Total number of 231 patterns in the set of permutations avoiding 123.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =11a(4) =81a(5) =500a(6) =2794a(7) =14649a(8) =73489a(9) =356960a(10) =1691790a(11) =7864950a(12) =36000186a(13) =162697176a(14) =727505972a(15) =3223913365a(16) =14176874193a(17) =61926666824a(18) =268931341414
External references
- oeis: A210064