Number of 321-avoiding extensions of comb K_{s,3}^{beta}.
A234284
Number of 321-avoiding extensions of comb K_{s,3}^{beta}.
Terms
- a(0) =1a(1) =10a(2) =127a(3) =1866a(4) =29839a(5) =504265a(6) =8859742a(7) =160216631a(8) =2962451668a(9) =55752953619
External references
- oeis: A234284