A051911 Triangle T(n,m) = Nim-product of n and m, read by rows, 1<=n<=m.

1, 2, 3, 3, 1, 2, 4, 8, 12, 6, 5, 10, 15, 2, 7, 6, 11, 13, 14, 8, 5, 7, 9, 14, 10, 13, 3, 4, 8, 12, 4, 11, 3, 7, 15, 13, 9, 14, 7, 15, 6, 1, 8, 5, 12, 10, 15, 5, 3, 9, 12, 6, 1, 11, 14, 11, 13, 6, 7, 12, 10, 1, 9, 2, 4, 15, 12, 4, 8, 13, 1, 9, 5, 6, 10, 2, 14, 11, 13, 6, 11, 9, 4, 15, 2, 14, 3, 8

Offset: 1

Author

N. J. A. Sloane, Dec 20 1999

Keywords

• tabl
• nonn
• easy
• nice

Comments

A051910 with the first column (the zeros) removed.

Examples

			Triangle starts
1;
2,  3;
3,  1,  2;
4,  8, 12,  6;
5, 10, 15,  2,  7;
6, 11, 13, 14,  8, 5;
7,  9, 14, 10, 13, 3,  4;
8, 12,  4, 11,  3, 7, 15, 13;
		

References

• J. H. Conway, On Numbers and Games, Academic Press, p. 52.

Links

• R. J. Mathar, Table of n, a(n) for n = 1..3240
• Index entries for sequences related to Nim-multiplication

Crossrefs

Cf. A051776, A003987, A051775, A051776, A051910.

Extensions

More terms (taken from the Conway reference) from Joshua Zucker, May 03 2006