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A346084
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Number of invertible n X n cyclic matrices over GF(2).
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0
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1, 1, 5, 146, 17352, 8607552, 17362252800, 141087882903552, 4605333486987902976, 602440395156024780128256, 315546297657431573076891402240, 661423879140352987222707528171257856, 5547073628722488310034844542685201882415104, 186106159461598495645613441708238958650047305089024
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OFFSET
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0,3
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LINKS
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FORMULA
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Sum_{n>=0} a(n)x^n/A002884(n) = (1 + 2x/(2-x)* Product_{i>=2}(1 + x^i/((2^i-1)(1-x/2)^i)))^A001037(i).
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MATHEMATICA
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nn = 13; A001037 = Table[1/n Sum[MoebiusMu[n/d] 2^d, {d, Divisors[n]}], {n, 1, nn}]; Table[Product[2^n - 2^i, {i, 0, n - 1}], {n, 0, nn}]CoefficientList[Series[(1 + 2 x/(2 - x)) Product[(1 + 2^i x^i/((2^i - 1) (2^i - x^i)))^ A001037[[i]], {i, 2, nn}], {x, 0, nn}], x]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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