A233340 Number of tilings of a 5 X 3n rectangle using 5n trominoes of any shape.

1, 62, 8342, 1269900, 198253934, 31111319376, 4887323351972, 767919868804309, 120664440361104580, 18960353496615710993, 2979300461790704311162, 468147088780110777732830, 73561466714064126023807694, 11558951424929920406557632356, 1816295465197137076501207582877

Offset: 0

Author

Alois P. Heinz, Dec 07 2013

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..400
• Alois P. Heinz, G.f. for A233340
• Wikipedia, Tromino

Crossrefs

Trisection of column k=5 of A233320.

Formula

G.f.: see link above.