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A233430 Number of tilings of a 6 X 5n rectangle with 6n pentominoes of any shape. 1
1, 27950, 7845888732, 2440547587954985, 761939299852168617616, 237901286831883052707985079, 74280211349600198206855422647223, 23192594468009753324332443890051572285, 7241449792690453645696899431118614611440302, 2261005988402064534018912069618412264537768750810 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..9.

Wikipedia, Pentomino

CROSSREFS

Quintisection of column k=6 of A233427.

Sequence in context: A046333 A202403 A206618 * A220986 A242607 A203658

Adjacent sequences:  A233427 A233428 A233429 * A233431 A233432 A233433

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Dec 09 2013

STATUS

approved

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Last modified August 12 23:52 EDT 2022. Contains 356077 sequences. (Running on oeis4.)