

A110352


A110351(n)/T(n) where T(n) is the nth triangular number.


3



2, 1, 5, 11, 2, 4, 41, 55, 13, 17, 7, 9, 32, 1, 26, 239, 59, 67, 14, 2, 12, 104, 60, 66, 137, 149, 46, 50, 23, 25, 929, 116, 20, 5, 39, 65, 314, 40, 6, 230, 34, 36, 117, 4, 82, 494, 219, 229, 563, 54, 27, 146, 662, 97, 9, 49, 91, 797, 220, 228, 884, 11, 740, 614, 18, 122, 251
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OFFSET

1,1


LINKS



MAPLE

A110351 := proc(n) local k ; for k from 1 to n*(n+1) do if (k*(2*n+k+1)) mod (n*(n+1)) =0 then RETURN(k*(n+(k+1)/2)) ; fi ; od ; RETURN(0) ; end: A110352 := proc(n) 2*A110351(n)/(n*(n+1)) ; end: for n from 1 to 100 do printf("%d, ", A110352(n)) ; od ; # R. J. Mathar, May 02 2007


MATHEMATICA

Do[t = n*(n + 1)/2; k = 1; While[Mod[k*n + k*(k + 1)/2, t] > 0, k++ ]; Print[(k*n + k*(k + 1)/2)/((n*(n + 1))/2)], {n, 1, 60}] (* Stefan Steinerberger, Feb 17 2006 *)


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



