Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting five doublets into the initially empty word.

A194717

Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting five doublets into the initially empty word.

Terms

    a(0) =0a(1) =1a(2) =126a(3) =1181a(4) =4966a(5) =14289a(6) =32966a(7) =65821a(8) =118686a(9) =198401a(10) =312814a(11) =470781a(12) =682166a(13) =957841a(14) =1309686a(15) =1750589a(16) =2294446a(17) =2956161a(18) =3751646a(19) =4697821a(20) =5812614a(21) =7114961a(22) =8624806a(23) =10363101a(24) =12351806a(25) =14613889a(26) =17173326a(27) =20055101a(28) =23285206a(29) =26890641

External references