A090044 Triangle read by rows: T(n,k) = A083093 with 1's and 2's interchanged.

2, 2, 2, 2, 1, 2, 2, 0, 0, 2, 2, 2, 0, 2, 2, 2, 1, 2, 2, 1, 2, 2, 0, 0, 1, 0, 0, 2, 2, 2, 0, 1, 1, 0, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 1, 2, 0, 0, 0, 0, 0, 0, 2, 1, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 2, 2, 2, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 2, 2

Offset: 0

Author

N. J. A. Sloane, Jan 19 2004

Keywords

• nonn
• tabl
• easy

Examples

			2; 2,2; 2,1,2; 2,0,0,2; ...
		

Links

• Y. Moshe, The density of 0's in recurrence double sequences, J. Number Theory, 103 (2003), 109-121; see Fig. 1.
• Y. Moshe, The distribution of elements in automatic double sequences, Discr. Math., 297 (2005), 91-103.

Crossrefs

Cf. A007318, A083093.

Programs

Mathematica

-Mod[ Flatten[ Table[ Binomial[n, k], {n, 0, 13}, {k, 0, n}]], -3] (* Robert G. Wilson v, Jan 19 2004 *)

Formula

The negative of Pascal's triangle read mod 3.

Extensions

Extended by Robert G. Wilson v, Jan 19 2004