A182828 Array of the numbers (3*i+1)*3^j, i>=0, j>=0, read by antidiagonals.

1, 3, 4, 9, 12, 7, 27, 36, 21, 10, 81, 108, 63, 30, 13, 243, 324, 189, 90, 39, 16, 729, 972, 567, 270, 117, 48, 19, 2187, 2916, 1701, 810, 351, 144, 57, 22, 6561, 8748, 5103, 2430, 1053, 432, 171, 66, 25, 19683, 26244, 15309, 7290, 3159

Offset: 1

Author

Clark Kimberling, Dec 06 2010

Keywords

• nonn
• tabl

Examples

			Northwest corner:
1....3....9...27...
4...12...36..108...
7...21...63..189...
10..30...90..270...
		

Crossrefs

Cf. A000244 (row 1), A016777 (column 1).

Cf. A054582, A182829, A182830.

Terms in ascending order: A026225.

Formula

T(i,j) = (3*i+1)*3^j, i>=0, j>=0.