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A129283 (Arithmetic derivative of n) + n. 9
0, 1, 3, 4, 8, 6, 11, 8, 20, 15, 17, 12, 28, 14, 23, 23, 48, 18, 39, 20, 44, 31, 35, 24, 68, 35, 41, 54, 60, 30, 61, 32, 112, 47, 53, 47, 96, 38, 59, 55, 108, 42, 83, 44, 92, 84, 71, 48, 160, 63, 95, 71, 108, 54, 135, 71, 148, 79, 89, 60, 152, 62, 95, 114, 256, 83, 127, 68 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

a(n) = A003415(n*A051674(k)) / A051674(k);

a(A129284(n))>1, a(A129285(n))>1, a(A129286(n))>1.

LINKS

R. Zumkeller, Table of n, a(n) for n = 0..10000

FORMULA

a(n) = A003415(n) + n.

PROG

(Haskell)

a129283 n = a003415 n + n  -- Reinhard Zumkeller, Nov 01 2013

CROSSREFS

Sequence in context: A213954 A074212 A125715 * A332844 A330575 A079787

Adjacent sequences:  A129280 A129281 A129282 * A129284 A129285 A129286

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Apr 07 2007

STATUS

approved

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Last modified March 8 13:59 EST 2021. Contains 341949 sequences. (Running on oeis4.)