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A220771 Number of tilings of a 5 X n rectangle using integer sided rectangular tiles of equal area. 2
1, 2, 11, 7, 115, 4, 1225, 7, 15242, 134, 185941, 14, 2342936, 23, 29253223, 3685, 367191322, 63, 4602885566, 109, 57743314072, 109863, 724240366265, 328, 9084849245294, 575, 113956161829517, 3301910, 1429442003678258, 1760, 17930520656581330, 3087 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

EXAMPLE

a(3) = 7:

._____. ._____. ._____. ._____. ._____. ._____. ._____.

|     | | | | | |_____| |_____| |_____| | | | | |_|_|_|

|     | | | | | |_____| |_____| | | | | | | | | |_|_|_|

|     | | | | | |_____| | | | | | | | | |_|_|_| |_|_|_|

|     | | | | | |_____| | | | | |_|_|_| |_____| |_|_|_|

|_____| |_|_|_| |_____| |_|_|_| |_____| |_____| |_|_|_|

CROSSREFS

Column k=5 of A220777.

Sequence in context: A224210 A344776 A290572 * A277055 A009258 A009204

Adjacent sequences:  A220768 A220769 A220770 * A220772 A220773 A220774

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Dec 19 2012

STATUS

approved

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Last modified August 2 09:22 EDT 2021. Contains 346422 sequences. (Running on oeis4.)