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A064223 a(1) = 1; a(n + 1) = a(n) + number of decimal digits of a(n) for n > 0. 3
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 103, 106, 109, 112, 115, 118, 121, 124, 127, 130, 133, 136 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harry J. Smith, Table of n, a(n) for n=1..1000

FORMULA

a(1) = 1; a(n + 1) = a(n) + ceil(log10(a(n) + 1)) for n > 0. - corrected by Harry J. Smith, Sep 10 2009

MATHEMATICA

NestList[#+IntegerLength[#]&, 1, 70] (* Harvey P. Dale, Jul 26 2011 *)

PROG

(PARI) { a=0; for (n=1, 1000, write("b064223.txt", n, " ", a+=#Str(a)) ) } \\ Harry J. Smith, Sep 10 2009

(Haskell)

a064223 n = a064223_list !! (n-1)

a064223_list = iterate (\x -> x + (fromIntegral $ a055642 x)) 1

-- Reinhard Zumkeller, Aug 02 2012

CROSSREFS

Cf. A055642.

Sequence in context: A032960 A117804 A088235 * A098952 A144688 A164836

Adjacent sequences:  A064220 A064221 A064222 * A064224 A064225 A064226

KEYWORD

nice,nonn,base

AUTHOR

Reinhard Zumkeller, Sep 21 2001

STATUS

approved

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Last modified November 20 08:16 EST 2018. Contains 317385 sequences. (Running on oeis4.)