A060677 - OEIS

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A060677

Number of linear n-celled polyominoes, those with the property that a line can be drawn that intersects the interior of every cell.

1

1, 1, 2, 3, 5, 8, 11, 17, 22, 31, 38, 52, 61, 81, 93, 117, 133, 165, 184, 225, 248, 295, 323, 381, 413, 481, 519, 596, 640, 731, 779, 885, 941, 1057, 1121, 1249, 1319, 1465, 1544, 1702, 1789, 1967, 2060, 2259, 2362, 2573, 2687, 2921, 3043, 3298, 3430, 3701

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

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..52.

E. J. Friedman, Math. Magic

Sean A. Irvine and Richard H. Littin, Java program (github)

Sean A. Irvine and Richard H. Littin, Linear Animals, 2022.

CROSSREFS

Sequence in context: A238591 A039847 A046938 * A131787 A091498 A227562

Adjacent sequences: A060674 A060675 A060676 * A060678 A060679 A060680

KEYWORD

nice,nonn

AUTHOR

Jason Earls, Apr 18 2001

EXTENSIONS

More terms from Sean A. Irvine, Dec 25 2022

STATUS

approved