A050179 T(n,k) = M0(n,k,f(n,k)), where M0 is given by A050176 and f(n,k) is the 4th-from-least t for which M0(n,k,t) is not 0.

1, 1, 1, 1, 7, 1, 1, 8, 8, 1, 1, 9, 35, 9, 1, 1, 10, 44, 44, 10, 1, 1, 11, 54, 154, 54, 11, 1, 1, 12, 65, 208, 208, 65, 12, 1, 1, 13, 77, 273, 637, 273, 77, 13, 1, 1, 14, 90, 350, 910, 910, 350, 90, 14, 1, 1, 15, 104, 440, 1260, 2548, 1260, 440, 104, 15, 1

Offset: 7

Author

Clark Kimberling

Keywords

• nonn
• tabl

Comments

f(n,k)=2 if 3<=k<=[ (n-1)/2 ], else f(n,k)=2k-n+3.

Examples

			Rows: {1}; {1,1}; {1,7,1}: {1,8,8,1}; ... (all palindromes)