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 A319326 a(n) is the number of column convex polyglasses (polyiamonds which need only touch at corners) with n cells. 2
 2, 12, 84, 612, 4532, 33762, 252106, 1884120, 14084674, 105295512, 787178752 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A polyglass is column convex if the intersection of its interior with any vertical line through the centers of the cells is connected. LINKS Adam Gruber, Java program to count lattice animals. EXAMPLE There are four triglasses that are not column convex. So a(2) = A319324(3) - 4 = 84. CROSSREFS Cf. A319324 (fixed polyglasses), A319325 (row convex polyglasses), A319323 (column convex polyiamonds). Sequence in context: A052864 A136278 A130464 * A214765 A006657 A105927 Adjacent sequences:  A319323 A319324 A319325 * A319327 A319328 A319329 KEYWORD nonn,more AUTHOR David Bevan, Sep 27 2018 STATUS approved

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Last modified May 28 15:04 EDT 2022. Contains 354115 sequences. (Running on oeis4.)