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A094171 Number of quasi-tetrominoes in an n X n bounding box. 4
0, 0, 1, 20, 147, 670, 2239, 6138, 14531, 30904, 60369, 110300, 190671, 314910, 500247, 768810, 110300, 190671, 314910, 500247, 768810, 1147959, 1671648 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
EXAMPLE
See A094170 for example of similar sequence.
CROSSREFS
Sequence in context: A190067 A238021 A183959 * A100190 A189494 A022680
KEYWORD
nonn
AUTHOR
Jon Wild, May 07 2004
EXTENSIONS
Corrected and extended by Jon Wild, May 11 2004
STATUS
approved

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Last modified March 3 13:47 EST 2024. Contains 370512 sequences. (Running on oeis4.)