a(n) is the number of dissections of a (4*n+2)-gon into hexagons using strictly disjoint diagonals.

A387202

a(n) is the number of dissections of a (4*n+2)-gon into hexagons using strictly disjoint diagonals.

Terms

    a(0) =1a(1) =5a(2) =21a(3) =87a(4) =363a(5) =1534a(6) =6570a(7) =28492a(8) =124944a(9) =553301a(10) =2471373a(11) =11122275a(12) =50389695a(13) =229643895a(14) =1052093655a(15) =4842863465a(16) =22386911925a(17) =103885321615a(18) =483759492255

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