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A231960
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Powers of 3 together with multiples of 6.
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0
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1, 3, 6, 9, 12, 18, 24, 27, 30, 36, 42, 48, 54, 60, 66, 72, 78, 81, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150, 156, 162, 168, 174, 180, 186, 192, 198, 204, 210, 216, 222, 228, 234, 240, 243, 246, 252, 258
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OFFSET
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1,2
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COMMENTS
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Also, numbers m such that m divides A057083(m-1), see the Smyth reference.
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LINKS
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PROG
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return 6.divides(n) or n==3^valuation(n, 3)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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