Total number of nodes summed over all lattice paths from (0,0) to (i,n-2*i) that do not go above the diagonal x=y using steps in {(1,0), (0,1)}.
A357655
Total number of nodes summed over all lattice paths from (0,0) to (i,n-2*i) that do not go above the diagonal x=y using steps in {(1,0), (0,1)}.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =3a(4) =3a(5) =8a(6) =14a(7) =15a(8) =35a(9) =59a(10) =69a(11) =147a(12) =245a(13) =300a(14) =608a(15) =1005a(16) =1269a(17) =2489a(18) =4091a(19) =5280a(20) =10120a(21) =16565a(22) =21735a(23) =40950a(24) =66820a(25) =88815a(26) =165125a(27) =268785a(28) =361005a(29) =664108
External references
- oeis: A357655