A364438 - OEIS

%I #22 Apr 28 2024 16:57:53

%S 9,270,27110,8798490,8980383330,28344705113430,273927748387623390,

%T 8057418594145673168610,718650987298253553656580570,

%U 193874673319110717570773876192670,157927323459469084048485672225266775510,387962431958247267773527802272080627127318890

%N The sum of the weights of the stones-and-bones tilings of the (n,2n-3)-benzel, where each stone is given multiplicative weight 3.

%C See Problem 18 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="/A364438/b364438.txt">Table of n, a(n) for n = 3..17</a>

%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, A364417, A364418, A364481, A364482, A364483.

%K nonn

%O 3,1

%A _James Propp_, Jul 24 2023