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A247103 Number of tilings of a 5 X n rectangle using n pentominoes of shapes I, N, P, U, T. 3
1, 1, 3, 11, 33, 166, 589, 2216, 8935, 33984, 137056, 539085, 2100341, 8324716, 32607928, 128652672, 507032667, 1992083368, 7853132654, 30894420646, 121642017784, 479048967517, 1885229164497, 7423732617043, 29223734864421, 115048209160729, 452968829090506 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

Wikipedia, Pentomino

EXAMPLE

a(3) = 11:

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

| | | |     |   | |     | |   |     |_.   |

| | | |     | ._| |     | | ._|     | |___|

| | | |     |_| ._|     | |_| |     | .___|

| | | |     | |_| |     | |   |     |_|   |

|_|_|_| (1) |_____| (4) |_|___| (4) |_____| (2) .

CROSSREFS

Cf. A174249, A233427, A247196.

Sequence in context: A032199 A018413 A004662 * A036542 A084266 A052471

Adjacent sequences:  A247100 A247101 A247102 * A247104 A247105 A247106

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Nov 20 2014

STATUS

approved

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Last modified October 21 07:20 EDT 2018. Contains 316405 sequences. (Running on oeis4.)