A247739 Total number of P shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.

0, 0, 4, 60, 556, 5328, 45316, 405636, 3583136, 30801264, 261702184, 2204389124, 18485952896, 154072120428, 1276431617512, 10525735832272, 86463238965520, 707822586795020, 5776135319900600, 47001025464956044, 381480686633266156, 3089168335328298424, 24963223479997963992

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 * A247706(n,k).

Crossrefs

Cf. A174249, A233427, A247706.

Sequence in context: A210425 A366690 A002060 * A007220 A034866 A055315

Adjacent sequences: A247736 A247737 A247738 * A247740 A247741 A247742

Keyword

nonn

Author

Alois P. Heinz, Sep 23 2014

Status

approved