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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 Table of n, a(n) for n=1..85. MATHEMATICA RecurrenceTable[{a[1]==1, a[n]==DivisorSigma[0, n+a[n-1]]}, a, {n, 20}] (* Harvey P. Dale, Apr 25 2016 *) CROSSREFS Cf. A000005 Sequence in context: A154417 A292421 A205563 * A305425 A212652 A303691 Adjacent sequences: A147591 A147592 A147593 * A147595 A147596 A147597 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.)