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A323340 Denominator of the sum of inverse products of parts in all compositions of n. 6
1, 1, 2, 3, 3, 60, 360, 70, 1680, 3780, 75600, 138600, 285120, 129729600, 363242880, 3405402000, 1009008000, 308756448000, 5557616064000, 52797352608000, 351982350720000, 221748880953600, 1524523556556000, 738190353700800, 13464592051502592000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..506

MAPLE

b:= proc(n) option remember;

     `if`(n=0, 1, add(b(n-j)/j, j=1..n))

    end:

a:= n-> denom(b(n)):

seq(a(n), n=0..25);

CROSSREFS

See A323339 for more information.

Sequence in context: A101462 A242786 A214219 * A280895 A088266 A116889

Adjacent sequences:  A323337 A323338 A323339 * A323341 A323342 A323343

KEYWORD

nonn,frac

AUTHOR

Alois P. Heinz, Jan 11 2019

STATUS

approved

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Last modified April 20 03:03 EDT 2019. Contains 322294 sequences. (Running on oeis4.)