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A175928 Number of bases in which the concatenation of the consecutive increasing integers 1...n is greater than the concatenation of consecutive decreasing integers n...1 in the same base. 0
1, 1, 3, 3, 4, 3, 4, 5, 5, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 7, 7, 7, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

LINKS

Table of n, a(n) for n=2..106.

MATHEMATICA

Table[Count[ Table[Negative[FromDigits[Flatten[IntegerDigits[Reverse[Range[x]], ba]], \ ba] - FromDigits[Flatten[IntegerDigits[Range[x], ba]], ba]], {ba, 2, x + 1}], True], {x, 1, 200}]

CROSSREFS

Sequence in context: A243341 A238856 A096139 * A161357 A138372 A316662

Adjacent sequences:  A175925 A175926 A175927 * A175929 A175930 A175931

KEYWORD

base,nonn

AUTHOR

Dylan Hamilton, Oct 20 2010

STATUS

approved

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Last modified May 23 13:16 EDT 2019. Contains 323514 sequences. (Running on oeis4.)