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A322502 Number of tilings of a 9 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation. 2
1, 1, 55, 1500, 38097, 957006, 24009733, 600923375, 15029968375, 376116199534, 9394097589045, 234816663728554, 5869407851857410, 146709570371173411, 3667093829512515427, 91661210468678400305, 2291126428942263984999, 57268064504720859650768 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The shapes of the tiles are:

                       ._.

              ._.      | |

       ._.    | |      | |

  ._.  | |_.  | |_._.  | |_._._.

  |_|  |___|  |_____|  |_______|  ... .

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..300

Wikipedia, Polyomino

CROSSREFS

Column k=9 of A322494.

Sequence in context: A157096 A264467 A017771 * A271796 A222836 A017718

Adjacent sequences:  A322499 A322500 A322501 * A322503 A322504 A322505

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Dec 12 2018

STATUS

approved

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Last modified August 5 21:18 EDT 2020. Contains 336213 sequences. (Running on oeis4.)