A374154 - OEIS

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A374154

Number of domino tilings of the order n Aztec diamond which are diagonally and antidiagonally symmetric.

1

1, 2, 4, 10, 28, 96, 384, 1848, 10432, 70560, 564224, 5386080

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

Yi-Lin Lee, Off-diagonally symmetric domino tilings of the Aztec diamond, arXiv:2303.02750 [math.CO], 2023.

FORMULA

Finding a closed-form formula for a(n) is an open problem.

CROSSREFS

Cf. A006125, A005163, A372145, A374153.

Sequence in context: A188496 A369079 A191501 * A085549 A374174 A022492

Adjacent sequences: A374151 A374152 A374153 * A374155 A374156 A374157

KEYWORD

nonn,more

AUTHOR

Ludovic Schwob, Jun 29 2024

STATUS

approved