Number of strings of length n over a 6-letter alphabet that do not begin with a palindrome.

A252699

Number of strings of length n over a 6-letter alphabet that do not begin with a palindrome.

Terms

    a(0) =0a(1) =6a(2) =30a(3) =150a(4) =870a(5) =5070a(6) =30270a(7) =180750a(8) =1083630a(9) =6496710a(10) =38975190a(11) =233820870a(12) =1402894950a(13) =8417188950a(14) =50502952950a(15) =303016634070

External references