A247771 Number of tilings of a 5 X n rectangle using n pentominoes of any but the T shape.

1, 1, 5, 50, 437, 3270, 21720, 160593, 1209537, 8999307, 66054288, 485082083, 3583263174, 26469863097, 195317239597, 1440271919247, 10624063817149, 78389991175482, 578363501074881, 4266856868607953, 31478045125433448, 232231064765922254, 1713315860292710073

Offset

0,3

Links

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

Wikipedia, Pentomino

Crossrefs

Column k=0 of A247707.

Cf. A174249, A233427.

Sequence in context: A060347 A133646 A043032 * A125962 A361555 A266028

Adjacent sequences: A247768 A247769 A247770 * A247772 A247773 A247774

Keyword

nonn

Author

Alois P. Heinz, Sep 23 2014

Status

approved