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A278782
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Numbers n such that A000041(n) is of the form 2^5 * k for odd k.
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7
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70, 179, 262, 278, 419, 561, 682, 698, 767, 879, 1147, 1238, 1273, 1317, 1362, 1364, 1378, 1450, 1478, 1499, 1509, 1548, 1590, 1638, 1668, 1711, 1752, 1781, 1838, 1949, 2170, 2187, 2300, 2317, 2334, 2382, 2408, 2447, 2463, 2499, 2551, 2669, 2695, 2788, 2926
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OFFSET
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1,1
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COMMENTS
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Numbers n such that A278478(n) = 5.
Also numbers n such that A000041(n) has five times as many even divisors as odd divisors.
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LINKS
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Colin Barker, Table of n, a(n) for n = 1..300
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FORMULA
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A000041(a(n)) = A278199(n).
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PROG
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(PARI) isok(n) = valuation(numbpart(n), 2)==5;
select(n->isok(n), vector(3000, n, n))
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CROSSREFS
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Cf. A000041, A278199, A278779, A278780, A278781, A278783, A278784.
Positions of 5's in A278478.
Sequence in context: A255793 A044402 A044783 * A154361 A165762 A165764
Adjacent sequences: A278779 A278780 A278781 * A278783 A278784 A278785
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KEYWORD
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nonn
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AUTHOR
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Colin Barker, Nov 28 2016
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STATUS
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approved
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