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A131134 a(1)=1. a(n) = (1/n + 1/a(n-1)) *LCM(n,a(n-1)). 2
1, 3, 2, 3, 8, 7, 2, 5, 14, 12, 23, 35, 48, 31, 46, 31, 48, 11, 30, 5, 26, 24, 47, 71, 96, 61, 88, 29, 2, 16, 47, 79, 112, 73, 108, 4, 41, 79, 118, 79, 120, 27, 70, 57, 34, 40, 87, 45, 94, 72, 41, 93, 146, 100, 31, 87, 48, 53, 112, 43, 104, 83, 146, 105, 34, 50, 117, 185, 254 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MAPLE

A131134 := proc(n) option remember ; if n = 1 then 1; else (1/n+1/A131134(n-1))*lcm(n, A131134(n-1)) ; fi ; end: seq(A131134(n), n=1..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 17 2007

CROSSREFS

Cf. A131133.

Equals T(n+1,2) for the Adams-Watters triangle, A125605. [From Gerry Myerson (gerry(AT)math.mq.edu.au), Mar 18 2010]

Sequence in context: A123649 A080848 A016602 * A151690 A143744 A095243

Adjacent sequences:  A131131 A131132 A131133 * A131135 A131136 A131137

KEYWORD

nonn

AUTHOR

Leroy Quet Jun 17 2007

EXTENSIONS

More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 17 2007

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Last modified February 14 01:35 EST 2012. Contains 205567 sequences.