A322502 - OEIS

%I #4 Dec 12 2018 15:55:00

%S 1,1,55,1500,38097,957006,24009733,600923375,15029968375,376116199534,

%T 9394097589045,234816663728554,5869407851857410,146709570371173411,

%U 3667093829512515427,91661210468678400305,2291126428942263984999,57268064504720859650768

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

%C The shapes of the tiles are:

%C                        ._.

%C               ._.      | |

%C        ._.    | |      | |

%C   ._.  | |_.  | |_._.  | |_._._.

%C   |_|  |___|  |_____|  |_______|  ... .

%H Alois P. Heinz, <a href="/A322502/b322502.txt">Table of n, a(n) for n = 0..300</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyomino">Polyomino</a>

%Y Column k=9 of A322494.

%K nonn

%O 0,3

%A _Alois P. Heinz_, Dec 12 2018