Triangle read by rows: row n (n>=1) enumerates marked mesh patterns of type R_n^(1,0,2,0).
A182544
Triangle read by rows: row n (n>=1) enumerates marked mesh patterns of type R_n^(1,0,2,0).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =2a(5) =90a(6) =26a(7) =4a(8) =394a(9) =232a(10) =82a(11) =12a(12) =1806a(13) =1776a(14) =1062a(15) =348a(16) =48a(17) =8558a(18) =12546a(19) =11118a(20) =6022a(21) =1836a(22) =240
External references
- oeis: A182544