OFFSET
1,2
REFERENCES
F. Aubonnet, D. Guinin and B.Joppin, Précis de Mathématiques, Analyse 2, Classes Préparatoires, Premier Cycle Universitaire, Bréal, 1990, Exercice 908, pages 82 and 91-92.
LINKS
FORMULA
Equals Sum_{k>=1} A000265(k)/k^3. - Amiram Eldar, Jun 27 2020
Equals Integral_{x=0..1} log(1+x+x^2+x^3+x^4+x^5+x^6)/x dx (Aubonnet). - Bernard Schott, Feb 04 2022
EXAMPLE
1.409943485869908374119212999982307305045...
MATHEMATICA
RealDigits[Pi^2/7, 10, 105][[1]] (* T. D. Noe, Oct 05 2011 *)
PROG
(Magma) Pi(RealField(128))^2/7; // G. C. Greubel, Jun 02 2021
(Sage) numerical_approx(pi^2/7, digits=128) # G. C. Greubel, Jun 02 2021
(PARI) Pi^2/7 \\ Michel Marcus, Feb 04 2022
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Omar E. Pol, Oct 04 2011
EXTENSIONS
Extended by T. D. Noe, Oct 05 2011
STATUS
approved