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A120267 Numerator of Sum[n^k/k!,{k,1,n}]. 3
1, 4, 12, 100, 1085, 1218, 47201, 556088, 10659753, 7281020, 62927202701, 7217988, 60718623181177, 595952851172, 13324959230295, 247016251998448, 28505095507110827053, 549689328228186, 320305941258100632731917 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

n divides a(n). a(n)/n = A119029[n] = {1, 2, 4, 25, 217, 203, 6743, 69511, 1184417, ...}. - Alexander Adamchuk, Oct 08 2006

LINKS

Table of n, a(n) for n=1..19.

FORMULA

a(n) = numerator[Sum[n^k/k!,{k,1,n}]].

a(n) = n*A119029[n]. - Alexander Adamchuk, Oct 08 2006

MATHEMATICA

Numerator[Table[Sum[n^k/k!, {k, 1, n}], {n, 1, 30}]]

CROSSREFS

Cf. A119029.

Sequence in context: A268363 A038053 A217155 * A012278 A070040 A079822

Adjacent sequences:  A120264 A120265 A120266 * A120268 A120269 A120270

KEYWORD

frac,nonn

AUTHOR

Alexander Adamchuk, Jun 30 2006

STATUS

approved

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Last modified October 15 18:11 EDT 2019. Contains 328037 sequences. (Running on oeis4.)