A247738 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A247738

Total number of N shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.

2

0, 0, 0, 8, 88, 1024, 10388, 99840, 935900, 8415368, 74295280, 645535244, 5545784444, 47152918764, 397457338488, 3327197881716, 27688757985292, 229256300558340, 1889667799688076, 15514699106805468, 126939424800685264, 1035396864840877088, 8421920979218715332

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

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

Wikipedia, Pentomino

FORMULA

a(n) = Sum_{k>0} k * A247705(n,k).

CROSSREFS

Cf. A174249, A233427, A247705.

Sequence in context: A112907 A053380 A250166 * A115864 A036917 A378685

Adjacent sequences: A247735 A247736 A247737 * A247739 A247740 A247741

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 23 2014

STATUS

approved