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A173091 a(1)=2, a(2)=2, a(n)=a(n-2)+floor(a(n-2)*a(n-1)/(a(n-2)+a(n-1))). 0
2, 2, 3, 3, 4, 4, 6, 6, 9, 9, 13, 14, 19, 22, 29, 34, 44, 53, 68, 82, 105, 128, 162, 199, 251, 309, 389, 481, 604, 748, 938, 1164, 1457, 1811, 2264, 2817, 3519, 4381, 5470, 6813, 8504, 10595, 13221, 16476, 20556, 25621, 31961, 39841, 49695, 61953, 77270, 96337 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
a=2; b=2; lst={a, b}; Do[c=a+Floor[a*b/(a+b)]; AppendTo[lst, c]; a=b; b=c, {n, 5!}]; lst
CROSSREFS
Sequence in context: A027190 A036824 A108104 * A029025 A035396 A326077
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 15:28 EDT 2024. Contains 371254 sequences. (Running on oeis4.)