We establish an asymptotic formula for an alternating sum of the reciprocal of a class of multiplicative functions. The proof is straightforward and uses classical convolution techniques. Numerous… (More)

Aronson’s sequence 1, 4, 11, 16, . . . is defined by the English sentence “t is the first, fourth, eleventh, sixteenth, . . . letter of this sentence.” This paper introduces some numerical analogues,… (More)

The aim of this note is the study of an integer matrix whose determinant is related to the Möbius function. We derive a number-theoretic inequality involving sums of a certain class of Möbius… (More)

The authors have studied in vitro the platelet aggregability induced with ADP, collagen and ristocetin. Chloroquine was added at increasing concentration (3,2 mgr/l, 16 mgr/l, 32 mgr/l). The results… (More)

The Kolakoski sequence (Kn) is perhaps one of the most famous examples of selfdescribing sequences for which some problems are still open. In particular, one does not know yet whether the density of… (More)

The authors have studied 50 Ivorians and 50 Europeans people, all living in Abidjan for at least 10 years. Platelet aggregability with increasing ADP concentration (0.6, 1.2, 2.4 mumoles/l), collagen… (More)