a(n) = the number of hills (arch length of 1 with no covering arches) for semi-meander solutions with n arches and floor((n+2)/2) arch group returns to the x axis.
A262258
a(n) = the number of hills (arch length of 1 with no covering arches) for semi-meander solutions with n arches and floor((n+2)/2) arch group returns to the x axis.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =6a(5) =10a(6) =16a(7) =24a(8) =40a(9) =56a(10) =96a(11) =128a(12) =224a(13) =288a(14) =512a(15) =640a(16) =1152a(17) =1408a(18) =2560a(19) =3072a(20) =5632a(21) =6656a(22) =12288a(23) =14336a(24) =26624a(25) =30720a(26) =57344a(27) =65536a(28) =122880a(29) =139264
External references
- oeis: A262258