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Number of n X n symmetric 0..2 arrays with rows, considered as 3-ary numbers, in nondecreasing order

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`%I #5 Dec 18 2015 18:17:22
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`%S 3,15,151,3495,198503,28534087,10586251623,10294697200775,
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`%T 26586793509930791,184408340876752843335,3468543642532070124804583,
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`%U 178388170025664039139771509767,25266393167195209778186849218689703
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`%N Number of n X n symmetric 0..2 arrays with rows, considered as 3-ary numbers, in nondecreasing order
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`%H R. H. Hardin, <a href="/A162078/b162078.txt">Table of n, a(n) for n=1..14</a>
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`%K nonn
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`%O 1,1
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`%A _R. H. Hardin_ Jun 25 2009
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