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A161842 Partial sums of A161841. 2
2, 4, 6, 10, 12, 16, 18, 22, 26, 30, 32, 38, 40, 44, 48, 54, 56, 62, 64, 70, 74, 78, 80, 88, 92, 96, 100, 106, 108, 116, 118, 124, 128, 132, 136, 146, 148, 152, 156, 164, 166, 174, 176, 182, 188, 192, 194, 204, 208, 214, 218, 224, 226, 234, 238, 246 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

FORMULA

a(n) = A094820(n)*2.

a(n) = Sum(i=1..n, (1 + A008836(i))*floor(n/i)). - Enrique Pérez Herrero, Jul 10 2012

CROSSREFS

Cf. A038548, A094820, A161841.

Sequence in context: A229489 A107304 A082417 * A249434 A249425 A085477

Adjacent sequences:  A161839 A161840 A161841 * A161843 A161844 A161845

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Jun 23 2009

STATUS

approved

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Last modified August 24 16:21 EDT 2019. Contains 326295 sequences. (Running on oeis4.)