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A192977 Number of times 9*n occurs in A068395. 2
4, 4, 2, 2, 3, 2, 2, 3, 2, 1, 0, 4, 1, 1, 3, 1, 2, 2, 2, 1, 4, 0, 0, 1, 3, 2, 1, 2, 2, 2, 2, 1, 0, 1, 3, 0, 2, 2, 2, 1, 2, 2, 1, 0, 2, 1, 1, 3, 2, 1, 3, 1, 1, 2, 0, 2, 0, 2, 0, 2, 1, 2, 2, 1, 2, 0, 2, 3, 0, 1, 3, 2, 1, 2, 1, 1, 0, 2, 1, 1, 2, 1, 2, 2, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

EXAMPLE

n=1: A068395(k) = 9 = 9*1, for k = 5,6,7,8 therefore a(1) = 4;

n=10: 90 = 9*10 doesn't occur in A068395, therefore a(10) = 0;

n=100: A068395(156) = A068395(157) = 900 = 9*100, therefore a(100) = 2.

PROG

(Haskell)

import Data.List (group)

a192977_list = f 0 $ group a068395_list where

   f n xss'@(xs:xss)

     | head xs `div` 9 == n = length xs : f (n+1) xss

     | otherwise            = 0 : f (n+1) xss'

CROSSREFS

Sequence in context: A291085 A193556 A120438 * A038800 A126712 A162232

Adjacent sequences:  A192974 A192975 A192976 * A192978 A192979 A192980

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Aug 04 2011

STATUS

approved

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Last modified November 11 18:50 EST 2019. Contains 329031 sequences. (Running on oeis4.)