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A147594 a(1)=1, a(n)= sigma_0 (n+a(n-1)). 0
1, 2, 2, 4, 3, 3, 4, 6, 4, 4, 4, 5, 6, 6, 4, 6, 2, 6, 3, 2, 2, 8, 2, 4, 2, 6, 4, 6, 4, 4, 4, 9, 8, 8, 2, 4, 2, 8, 2, 8, 3, 6, 3, 2, 2, 10, 4, 6, 4, 8, 2, 8, 2, 8, 6, 4, 2, 12, 2, 4, 4, 8, 2, 8, 2, 6, 2, 8, 4, 4, 6, 8, 5, 2, 4, 10, 4, 4, 2, 4, 4, 4, 4, 8, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(n)=A000005(n+a(n-1)).
LINKS
MATHEMATICA
RecurrenceTable[{a[1]==1, a[n]==DivisorSigma[0, n+a[n-1]]}, a, {n, 20}] (* Harvey P. Dale, Apr 25 2016 *)
CROSSREFS
Sequence in context: A154417 A292421 A205563 * A305425 A212652 A303691
KEYWORD
easy,nonn
AUTHOR
Ctibor O. Zizka, Nov 08 2008
EXTENSIONS
More terms from Harvey P. Dale, Apr 25 2016
STATUS
approved

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Last modified June 13 03:07 EDT 2024. Contains 373366 sequences. (Running on oeis4.)