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A370964
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a(n) = number of "weakly lonesum" 2 X 2 X n tensors.
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3
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1, 16, 254, 4006, 62834, 980926, 15251714, 236305246, 3649992194, 56225671966, 864046126274, 13249946549086, 202798763405954, 3098675363464606, 47273845225223234, 720219685203906526, 10958863373616410114, 166560903942055522846, 2528904905860164038594
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 2*15^n - 14^n.
G.f.: (1-13*z) / ((1-15*z)*(1-14*z)). (End)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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