Number of zig-zag paths from top to bottom of a rectangle of width 11 with 2n rows whose color is that of the top right corner.
A153371
Number of zig-zag paths from top to bottom of a rectangle of width 11 with 2n rows whose color is that of the top right corner.
Terms
- a(0) =10a(1) =36a(2) =132a(3) =488a(4) =1812a(5) =6744a(6) =25132a(7) =93720a(8) =349620a(9) =1304504a(10) =4867884a(11) =18166008a(12) =67794100a(13) =253006296a(14) =944222892a(15) =3523868888a(16) =13151219892a(17) =49080945144a(18) =183172429612a(19) =683608511160
External references
- oeis: A153371