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A247743 Total number of W shapes in all tilings of a 5 X n rectangle with pentominoes of any shape. 2
0, 0, 0, 0, 48, 528, 4752, 44080, 408192, 3738692, 32818416, 282587664, 2417602560, 20523442012, 172798010156, 1443679767220, 11992713950224, 99165736820120, 816514750434924, 6697254233908596, 54745726513283448, 446174778295639204, 3626566397497170096 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

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

Wikipedia, Pentomino

FORMULA

a(n) = Sum_{k>0} k * A247710(n,k).

CROSSREFS

Cf. A174249, A233427, A247710.

Sequence in context: A034778 A060674 A233165 * A189346 A334713 A266210

Adjacent sequences:  A247740 A247741 A247742 * A247744 A247745 A247746

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 23 2014

STATUS

approved

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Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)