1,7

a(36) is first term such that a(n) < a(n-1) - see A244326.

Jaroslav Krizek, Table of n, a(n) for n = 1..10000

For n=10: a(10) = floor(antisigma(10/10)) = floor(37/10)) = 3.

(MAGMA) [Floor((n*(n+1)div 2-SumOfDivisors(n))div n): n in [1..1000]]

Cf. A024816, A244324, A244326.

Sequence in context: A320467 A086388 A111660 * A168050 A065033 A001057

Adjacent sequences: A244322 A244323 A244324 * A244326 A244327 A244328

nonn

Jaroslav Krizek, Jun 25 2014

approved