A393002 Number of fixed polyquarcs with n cells, with cusp connections allowed.

4, 12, 44, 176, 744, 3256, 14624, 66932, 310892, 1461068, 6932340, 33153748, 159621512, 772917652, 3761160704, 18381661400

Offset

1,1

Comments

See A393000 for details.

Links

Table of n, a(n) for n=1..16.

Formula

a(n) = 4*A393001(n) if n is odd, because polyquarcs cannot have any rotational symmetry if the number of cells is odd.

Crossrefs

Cf. A392394, A393000 (free), A393001 (one-sided).

Sequence in context: A007860 A226855 A391964 * A039740 A065143 A098543

Adjacent sequences: A392999 A393000 A393001 * A393003 A393004 A393005

Keyword

nonn,more

Author

Pontus von Brömssen, Jan 30 2026

Status

approved