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A110739 Arithmetic mean of row n in A112668. 4
1, 2, 7, 10, 311, 651, 42799, 410, 9709, 43584805, 6140565047, 5086263, 4696537119847, 23436764200591, 5124095576030431, 1345210, 7563707819165039903, 52981906467, 14523213296398891966759, 87169610 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..20.

FORMULA

For n > 1, a(n) = (A110738(n)^n-1)/(n*A110738(n)-n). - David Wasserman, Dec 12 2008

MAPLE

A110737 := proc(n) local i, a ; if n = 1 then RETURN(1) ; else a := 2 ; while (1-a^n)/(1-a) mod n <> 0 do a := a+1 ; od ; RETURN( (1-a^n)/(1-a) ) ; fi ; end: A110739 := proc(n) A110737(n)/n ; end: for n from 1 to 25 do printf("%d, ", A110739(n)) : od : # R. J. Mathar, Mar 13 2007

CROSSREFS

Equals A110737(n)/n.

Cf. A110737, A110738.

Sequence in context: A056656 A151346 A247166 * A179117 A133154 A100020

Adjacent sequences:  A110736 A110737 A110738 * A110740 A110741 A110742

KEYWORD

easy,nonn

AUTHOR

Amarnath Murthy, Aug 10 2005

EXTENSIONS

More terms from R. J. Mathar, Mar 13 2007

STATUS

approved

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Last modified October 20 22:22 EDT 2021. Contains 348119 sequences. (Running on oeis4.)