A182830 Array of the numbers (3*i+2)*3^j, i>=0, j>=0, read by antidiagonals.

2, 6, 5, 18, 15, 8, 54, 45, 24, 11, 162, 135, 72, 33, 14, 486, 405, 216, 99, 42, 17, 1458, 1215, 648, 297, 126, 51, 20, 4374, 3645, 1944, 891, 378, 153, 60, 23, 13122, 10935, 5832, 2673, 1134, 459, 180, 69, 26, 39366, 32805, 17496

Offset: 1

Author

Clark Kimberling, Dec 06 2010

Keywords

• nonn
• tabl

Comments

(Row 1)=A008776. (Column 1)=A016789.

Examples

			Northwest corner:
2....6...18...54...162...
5...15...45..135...405...
8...24...72..216...648...
11..33...99..297...891...
		

Crossrefs

Cf. A026179, A182831.

Formula

T(i,j)=(3*i+2)*3^j, i>=0, j>=0.