A322502 Number of tilings of a 9 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation.

1, 1, 55, 1500, 38097, 957006, 24009733, 600923375, 15029968375, 376116199534, 9394097589045, 234816663728554, 5869407851857410, 146709570371173411, 3667093829512515427, 91661210468678400305, 2291126428942263984999, 57268064504720859650768

Offset

0,3

Comments

The shapes of the tiles are:

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._. | |_. | |_._. | |_._._.

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

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