A247737 Total number of L shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.

0, 0, 4, 24, 436, 3888, 29880, 264460, 2353136, 20400352, 171215320, 1430108512, 11962161392, 99523393628, 822501750184, 6763177931936, 55433124540308, 453013557727460, 3690931980743340, 29988435689294280, 243064471330287696, 1965884816120576180

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..500

Wikipedia, Pentomino

Formula

a(n) = Sum_{k>0} k * A247704(n,k).

Crossrefs

Cf. A174249, A233427, A247704.

Sequence in context: A024250 A167140 A010572 * A326871 A012945 A296398

Adjacent sequences: A247734 A247735 A247736 * A247738 A247739 A247740

Keyword

nonn

Author

Alois P. Heinz, Sep 23 2014

Status

approved