A050178 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.

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, 44, 110, 110, 44, 10, 1, 1, 11, 54, 154, 275, 154, 54, 11, 1, 1, 12, 65, 208, 429, 429, 208, 65, 12, 1, 1, 13, 77, 273, 637, 1001, 637, 273, 77, 13, 1, 1, 14, 90, 350, 910

Offset: 5

Author

Clark Kimberling

Keywords

• nonn
• tabl

Comments

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

Examples

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