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A247774 Number of tilings of a 5 X n rectangle using pentominoes of any but the W shape. 2
1, 1, 5, 56, 461, 3558, 23966, 178127, 1362597, 10194184, 75684682, 561877016, 4192125848, 31292310312, 233221376211, 1737652233817, 12950437458383, 96538803978663, 719609376905074, 5363567352622148, 39977107204818978, 297975192242698825, 2221015587432193750 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

Wikipedia, Pentomino

CROSSREFS

Column k=0 of A247710.

Cf. A174249, A233427.

Sequence in context: A062125 A030060 A247710 * A258490 A255953 A174249

Adjacent sequences:  A247771 A247772 A247773 * A247775 A247776 A247777

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 23 2014

STATUS

approved

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Last modified January 24 22:09 EST 2021. Contains 340414 sequences. (Running on oeis4.)