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A093920 Row sums of A093919. 1
1, 4, 15, 40, 205, 276, 1939, 4432, 13689, 18100, 199111, 200784, 2610205, 3136420, 3191595, 7012576, 119213809, 137103012, 2604957247, 2605199080, 2608367181, 3084857644, 70951725835, 71062911792, 355315542025, 442803520276 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..26.

MATHEMATICA

T[n_, k_] := LCM @@ Drop[ Reverse[ Range[n]], (k - n)]; Table[ Plus @@ Table[ T[n, k], {k, n}], {n, 26}] (* Robert G. Wilson v, Apr 27 2004 *)

CROSSREFS

Cf. A093919.

Sequence in context: A031164 A116600 A074033 * A011844 A075468 A100503

Adjacent sequences:  A093917 A093918 A093919 * A093921 A093922 A093923

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Apr 25 2004

EXTENSIONS

Edited by Robert G. Wilson v, Apr 27 2004

STATUS

approved

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Last modified September 22 16:44 EDT 2020. Contains 337291 sequences. (Running on oeis4.)