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A071796 Denominators of a(n+1)=sum_{k=1}^n a'(n/k), a(1)=1, where a'(x)=a(x) if x integer and is linearly interpolated otherwise. 1
1, 1, 1, 1, 1, 2, 2, 6, 2, 4, 12, 20, 20, 60, 4, 84, 420, 840, 840, 504, 8, 120, 2520, 3080, 3080, 3080, 3080, 17160, 51480, 3432, 3432, 360360, 10920, 624, 48048, 4084080, 1361360, 12252240, 314160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..39.

EXAMPLE

a(2)=a'(1/1)=a(1)=1, so a'(x)=1 for all x in [1,2].

CROSSREFS

Cf. A071795.

Sequence in context: A138951 A163370 A278159 * A121699 A080404 A247451

Adjacent sequences:  A071793 A071794 A071795 * A071797 A071798 A071799

KEYWORD

nonn,easy,frac

AUTHOR

Michele Dondi (bik.mido(AT)tiscalinet.it), Jun 05 2002

STATUS

approved

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Last modified May 11 17:33 EDT 2021. Contains 343805 sequences. (Running on oeis4.)