Number of reversible strings with n beads of 5 colors. If more than 1 bead, not palindromic.

A032088

Number of reversible strings with n beads of 5 colors. If more than 1 bead, not palindromic.

Terms

    a(0) =5a(1) =10a(2) =50a(3) =300a(4) =1500a(5) =7750a(6) =38750a(7) =195000a(8) =975000a(9) =4881250a(10) =24406250a(11) =122062500a(12) =610312500a(13) =3051718750a(14) =15258593750a(15) =76293750000a(16) =381468750000

External references