A247120 Number of tilings of a 10 X n rectangle using 2n pentominoes of shape L.

1, 0, 4, 0, 16, 32, 76, 384, 386, 2976, 3952, 20520, 41104, 136160, 393624, 1027072, 3412146, 8470840, 27988904, 74155272, 230939032, 655493408, 1942645984, 5765577688, 16807041186, 50708538824, 148118970352, 446903215688, 1320213337712, 3968685090000

Offset

0,3

Links

Table of n, a(n) for n=0..29.

Wikipedia, Pentomino

Crossrefs

Cf. A174249, A233427.

Sequence in context: A261979 A007216 A057378 * A002979 A137279 A343473

Adjacent sequences: A247117 A247118 A247119 * A247121 A247122 A247123

Keyword

nonn

Author

Alois P. Heinz, Nov 19 2014

Status

approved