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

0,1

Links

Table of n, a(n) for n=0..104.

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.

Formula

The negative of Pascal's triangle read mod 3.

Example

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

Mathematica

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

Crossrefs

Cf. A007318, A083093.

Sequence in context: A175357 A232800 A248380 * A036238 A318723 A225180

Adjacent sequences: A090041 A090042 A090043 * A090045 A090046 A090047

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane, Jan 19 2004

Extensions

Extended by Robert G. Wilson v, Jan 19 2004

Status

approved