A050178 - OEIS

%I #4 Mar 30 2012 18:57:01

%S 1,1,1,1,5,1,1,6,6,1,1,7,20,7,1,1,8,27,27,8,1,1,9,35,75,35,9,1,1,10,

%T 44,110,110,44,10,1,1,11,54,154,275,154,54,11,1,1,12,65,208,429,429,

%U 208,65,12,1,1,13,77,273,637,1001,637,273,77,13,1,1,14,90,350,910

%N T(n,k)=M0(n,k,f(n,k)), where M0 is given by A050176 and f(n,k) is the 3rd-from-least t for which M0(n,k,t) is not 0.

%C f(n,k)=1 if 2<=k<=[ (n-1)/2 ], else f(n,k)=2k-n+2.

%e Rows: {1}; {1,1}; {1,5,1}; {1,6,6,1}; ... (all palindromes)

%K nonn,tabl

%O 5,5

%A _Clark Kimberling_