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A280324
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Number of lunar months of lunisolar cycles.
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2
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OFFSET
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1,1
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COMMENTS
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Number of synodic (lunar) months that better approximate (in the sense of continued fractions) an integral number of tropical years. See A280323 (number of corresponding tropical years) for comments and links.
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LINKS
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FORMULA
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For n > 2, a(n) = a(n-2) modulo a(n-1).
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EXAMPLE
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A280323(1) = 1 year exceeds a(1) = 12 lunar months by almost 11 days.
A280323(5) = 11 years exceeds a(5) = 136 lunar months by about 1.5 days.
A280323(6) = 19 years falls short of a(6) = 235 lunar months by about 2 hours.
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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STATUS
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approved
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