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A247776 Number of tilings of a 5 X n rectangle using pentominoes of any but the Y shape. 2
1, 1, 5, 44, 321, 2404, 14692, 98831, 684729, 4642752, 31650422, 213894450, 1451388234, 9868405649, 66968132029, 454745989239, 3086695784357, 20954497956277, 142275120134328, 965860855067492, 6557295186301572, 44517125016379779, 302224231486908372 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..500

Wikipedia, Pentomino

CROSSREFS

Column k=0 of A247712.

Cf. A174249, A233427.

Sequence in context: A268762 A068311 A109984 * A227640 A096355 A222508

Adjacent sequences:  A247773 A247774 A247775 * A247777 A247778 A247779

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 23 2014

STATUS

approved

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Last modified February 25 08:33 EST 2021. Contains 341606 sequences. (Running on oeis4.)