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A177236 a(n) = A049820(n) - A177235(n). 1
0, 0, 0, 0, 1, 0, 1, 1, 2, 1, 2, 1, 4, 3, 2, 2, 5, 3, 5, 4, 5, 4, 5, 4, 8, 7, 6, 5, 8, 5, 8, 8, 10, 9, 8, 6, 11, 10, 9, 8, 13, 10, 13, 12, 11, 10, 11, 10, 16, 14, 14, 13, 16, 13, 14, 13, 16, 15, 16, 13, 20, 19, 16, 16, 19, 16, 19, 18, 19, 16, 19, 17, 25, 24, 21, 20, 21, 18, 21, 20, 24, 23 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

Number of non-divisors k of n, 1<k<n, for which floor(n/k) is even. [From R. J. Mathar, May 24 2010]

LINKS

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

CROSSREFS

Cf. A000005, A049820, A177235

Sequence in context: A321757 A159272 A098372 * A341827 A138567 A103530

Adjacent sequences:  A177233 A177234 A177235 * A177237 A177238 A177239

KEYWORD

nonn

AUTHOR

Omar E. Pol, May 23 2010

EXTENSIONS

Terms from a(16) onwards from R. J. Mathar, May 24 2010

STATUS

approved

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Last modified July 1 10:54 EDT 2022. Contains 354972 sequences. (Running on oeis4.)