Number of zig-zag paths from top to bottom of a rectangle of width 5 with n rows whose color is that of the top right corner.
A153339
Number of zig-zag paths from top to bottom of a rectangle of width 5 with n rows whose color is that of the top right corner.
Terms
- a(0) =3a(1) =4a(2) =8a(3) =12a(4) =24a(5) =36a(6) =72a(7) =108a(8) =216a(9) =324a(10) =648a(11) =972a(12) =1944a(13) =2916a(14) =5832a(15) =8748a(16) =17496a(17) =26244a(18) =52488a(19) =78732a(20) =157464a(21) =236196a(22) =472392a(23) =708588a(24) =1417176a(25) =2125764a(26) =4251528a(27) =6377292a(28) =12754584a(29) =19131876
External references
- oeis: A153339