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A231900
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Omit the 1s from first differences of A084663.
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2
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2, 7, 13, 5, 29, 3, 59, 3, 7, 5, 3, 131, 3, 263, 3, 17, 3, 5, 3, 19, 569, 3, 17, 3, 13, 7, 5, 3, 1181, 3, 17, 3, 2381, 3, 11, 3, 5, 3, 7, 4787, 3, 5, 3, 11, 3, 53, 3, 11, 3, 13, 19, 9689, 3, 19379, 3, 7, 5, 3, 137, 3, 13, 38921, 3, 17, 3, 7, 77867, 3, 5, 3
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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DeleteCases[Differences[RecurrenceTable[{a[1]==8, a[n]==a[n-1]+GCD[ a[n-1], n]}, a, {n, 100000}]], 1] (* Harvey P. Dale, Apr 12 2016 *)
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PROG
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(Haskell)
a231900 n = a231900_list !! (n-1)
a231900_list = filter (> 1) a134744_list
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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