1,5
Tomas Oliveira e Silva, Enumeration of polyominoes
Sequence in context: A022021 A165203 A030520 this_sequence A006749 A002213 A099949
Adjacent sequences: A056881 A056882 A056883 this_sequence A056885 A056886 A056887
nonn
N. J. A. Sloane (njas(AT)research.att.com), Sep 03 2000
Search completed in 0.002 seconds