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A178909
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Indices of perfect polynomials over GF(2).
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2
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1, 6, 36, 54, 120, 2470, 2640, 3144, 3780, 32640, 41280, 52632, 67184, 1098176, 1157904, 2147450880
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OFFSET
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1,2
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COMMENTS
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Numbers k such that k = A178908(k); sum of divisors of k-th GF(2) polynomial is the polynomial itself.
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LINKS
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PROG
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(PARI) isok(n) = my(s = vecsum(divisors(Mod(1, 2)*Pol(binary(n))))); subst(lift(s), x, 2) == n; \\ Michel Marcus, Jan 13 2019
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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