OFFSET
1,2
COMMENTS
Limit of the series u where u(n) = 1/n when n is a square, and u(n) = (-1)^n/n otherwise.
REFERENCES
M. Lepez, Les Grands classiques de Mathématiques, Classes préparatoires scientifiques, Analyse, Exercices corrigés et commentés, MP-PC-PT, Bréal, 1995, Exercice 201, p. 29.
EXAMPLE
1.77425391971239434529139062851086121575292471744...
MAPLE
evalf(Pi^2/4 - log(2), 100);
MATHEMATICA
RealDigits[Pi^2/4 - Log[2], 10, 100][[1]] (* Amiram Eldar, Apr 24 2022 *)
PROG
(PARI) Pi^2/4 - log(2) \\ Michel Marcus, Apr 24 2022
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Bernard Schott, Apr 24 2022
STATUS
approved