Number of strings of length n over a 7-letter alphabet that do not begin with a palindrome.

A252700

Number of strings of length n over a 7-letter alphabet that do not begin with a palindrome.

Terms

    a(0) =0a(1) =7a(2) =42a(3) =252a(4) =1722a(5) =11802a(6) =82362a(7) =574812a(8) =4021962a(9) =28141932a(10) =196981722a(11) =1378789692a(12) =9651445482a(13) =67559543562a(14) =472916230122

External references