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A191291 The number of bases >=2 in which n is 3-digit number. 2
0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,16

LINKS

Table of n, a(n) for n=1..82.

FORMULA

a(n) = floor(sqrt(n))-floor(n^(1/3)) = A000196(n) - A048766(n).

PROG

(PARI) a(n)=sqrtint(n)-floor((n+.5)^(1/3)) \\ Charles R Greathouse IV, Jan 03 2013

CROSSREFS

Cf. A191279.

Sequence in context: A074908 A256707 A151963 * A131841 A230261 A242306

Adjacent sequences:  A191288 A191289 A191290 * A191292 A191293 A191294

KEYWORD

nonn,easy,base

AUTHOR

Vladimir Shevelev, May 29 2011

STATUS

approved

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Last modified August 14 21:07 EDT 2018. Contains 313756 sequences. (Running on oeis4.)