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A239433 Numbers m with at least one integer solution for x' = m, where x' is the arithmetic derivative of x (cf. A003415). 3
4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 66, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 80, 81 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A099302(a(n)) > 0.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

PROG

(Haskell)

a239433 n = a239433_list !! (n-1)

a239433_list = filter

   (\z -> any (== z) $ map a003415 $ takeWhile (<= a002620 z) a013929_list) [2..]

CROSSREFS

Cf. A098700 (complement), A002620.

Sequence in context: A294237 A162706 A088331 * A014091 A308040 A287961

Adjacent sequences:  A239430 A239431 A239432 * A239434 A239435 A239436

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 18 2014

STATUS

approved

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Last modified September 16 12:41 EDT 2019. Contains 327113 sequences. (Running on oeis4.)