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A078346 a(1)=1; a(n)=sum(k=1,n-1,a([(n-1)/k])). 2
1, 1, 2, 4, 7, 11, 17, 24, 34, 46, 62, 79, 104, 130, 163, 201, 249, 298, 363, 429, 513, 605, 714, 824, 966, 1112, 1284, 1468, 1687, 1907, 2181, 2456, 2779, 3120, 3510, 3910, 4394, 4879, 5430, 6008, 6677, 7347, 8139, 8932, 9836, 10788, 11850, 12913 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..48.

FORMULA

For k>1, a(prime(k)+1)=2*a(prime(k))-a(prime(k)-1)+1. - Benoit Cloitre, Aug 29 2004

CROSSREFS

Sequence in context: A177116 A011911 A175822 * A301760 A122051 A073471

Adjacent sequences:  A078343 A078344 A078345 * A078347 A078348 A078349

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Nov 22 2002

STATUS

approved

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Last modified April 10 11:34 EDT 2021. Contains 342845 sequences. (Running on oeis4.)