A057893 Negabinary numbral multiplication table.

0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 3, 4, 3, 0, 0, 4, 6, 6, 4, 0, 0, 5, 8, 1, 8, 5, 0, 0, 6, 10, 12, 12, 10, 6, 0, 0, 7, 12, 15, 16, 15, 12, 7, 0, 0, 8, 14, 2, 20, 20, 2, 14, 8, 0, 0, 9, 16, 13, 24, 105, 24, 13, 16, 9, 0, 0, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10, 0, 0, 11, 20, 27, 32, 19, 4

Offset: 0

Author

Marc LeBrun, Sep 25 2000

Keywords

• easy
• nonn
• tabl

Comments

Units are [1]=1 and [3]=-1.

Examples

			a(17)=6 since a(17) corresponds to the table entry for [3]+[2]=-1*-2=2=4-2=[6]
		

Crossrefs

Cf. A005351, A005352, A057892, A057894.