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%I #26 Apr 25 2024 15:13:21
%S 3,18,142,1266,12030,118650,1198230,12296202,127633590,1336133730,
%T 14079114270,149124688482,1586159072814,16929780310218,
%U 181227223899942,1944808008842490,20915277691567206
%N The number of stones-and-bones tilings of the (n,2n-3)-benzel.
%C See Problem 16 of the Propp article. It is conjectured that a(n) is 2-adically continuous as a function of n > 3.
%H James Propp, <a href="https://arxiv.org/abs/2206.06472">Trimer covers in the triangular grid: twenty mostly open problems</a>, arXiv:2206.06472 [math.CO], 2022.
%Y Cf. A352207, A364416, A364418, A364438, A364481, A364482, A364483.
%K nonn,more
%O 3,1
%A _James Propp_, Jul 23 2023
%E a(15)-a(19) from _James Propp_, Apr 25 2024