OFFSET
1,3
COMMENTS
Superset of Craig Knecht's A268311.
LINKS
Jean-Luc Manguin, Table of n, a(n) for n = 1..28
R. J. Mathar, Corrigendum to "Polyomino Enumeration Results (Parkin et al, SIAM Fall Meeting 1967)" viXra:1905.0474 (2019)
R. Parkin, L. J. Lander, and D. R. Parkin, Polyomino Enumeration Results, presented at SIAM Fall Meeting, 1967, and accompanying letter from T. J. Lander (annotated scanned copy) page 9 (incorrect at n=15).
EXAMPLE
The first rows of the array are:
1;
1, 2;
1, 6, 24;
1, 12, 181, 1051;
...
T(4,3)=181 = 15+39+59+42+21+4+1: In the 4x3 square fit 15 6-ominoes, 39 7-ominoes, 59 8-ominoes, 42 9-ominoes, 21 10-ominoes, 4 11-ominoes or 1 12-omino. - R. J. Mathar, Jun 07 2020
CROSSREFS
KEYWORD
AUTHOR
John Mason, Feb 03 2016
EXTENSIONS
a(16)-a(28) from Jean-Luc Manguin, May 25 2020
STATUS
approved