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A274180
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a(n) = Sum_{k=0..4n} (A035343(n,k) mod 2) * 2^k.
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1
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1, 31, 341, 6483, 69905, 2027247, 21041413, 417263459, 4311810305, 133666119455, 1461703693397, 27806864656979, 299071474565137, 8708265758097903, 90161415181374469, 1785159701350222947, 18447025552981295105
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OFFSET
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0,2
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COMMENTS
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a(n) is a binary palindrome (A006995) of 4n+1 bits since A035343(n,k) = A035343(n,4n-k), k=0..4n and A035343(n,0) = A035343(n,4n) = 1.
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LINKS
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Gheorghe Coserea, Table of n, a(n) for n = 0..200
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PROG
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(PARI)
a(n) = subst(lift(Pol(Mod([1, 1, 1, 1, 1], 2), 'x)^n), 'x, 2);
vector(17, n, a(n-1))
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CROSSREFS
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Cf. A035343.
Sequence in context: A142495 A100728 A296730 * A197644 A295211 A261759
Adjacent sequences: A274177 A274178 A274179 * A274181 A274182 A274183
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KEYWORD
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nonn,base
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AUTHOR
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Gheorghe Coserea, Jun 12 2016
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STATUS
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approved
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