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A220774 Number of tilings of an 8 X n rectangle using integer sided rectangular tiles of equal area. 2
1, 4, 43, 190, 2401, 15242, 169952, 1300180, 13036591, 108621208, 1032057418, 8944259474, 82759543294, 731238928631, 6675861553591, 59555740575193, 540068620936576, 4841141720468505, 43752880978895078, 393139794235777264, 3547076584685999770 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n+1)/a(n) tends to 9.00709752194696998983966861825826335610901... - Vaclav Kotesovec, Dec 25 2012

LINKS

Alois P. Heinz and Vaclav Kotesovec, Table of n, a(n) for n = 0..431 (first 90 terms computed by Alois P. Heinz)

EXAMPLE

a(1) = 4:

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CROSSREFS

Column k=8 of A220777.

Sequence in context: A111829 A200000 A198209 * A296683 A297649 A186678

Adjacent sequences:  A220771 A220772 A220773 * A220775 A220776 A220777

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Dec 19 2012

STATUS

approved

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Last modified October 15 21:06 EDT 2018. Contains 316237 sequences. (Running on oeis4.)