223112

Appears in sequences

• Members of A143610 for which both neighbors are squarefree.at n=34A166987
• Expansion of Product_{k>0} ((1 - q^(3*k))^4*(1 - q^(6*k))^2)/((1 - q^k)^4*(1 - q^(2*k))^2).at n=15A293629
• a(n) is the number of dominoes, among all domino tilings of the 2 X n rectangle, sharing a length-2 side with the boundary of the rectangle.at n=20A320947