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A084897
Decimal expansion of agm(1,5), the arithmetic-geometric mean of 1 and 5.
4
2, 6, 0, 4, 0, 0, 8, 1, 9, 0, 5, 3, 0, 9, 4, 0, 2, 8, 8, 6, 9, 6, 4, 2, 7, 4, 4, 8, 7, 2, 5, 0, 3, 4, 3, 3, 0, 9, 2, 7, 0, 6, 5, 2, 5, 5, 6, 3, 7, 6, 4, 9, 4, 8, 7, 7, 4, 8, 4, 1, 3, 2, 5, 4, 4, 5, 5, 6, 7, 9, 2, 8, 0, 5, 6, 8, 5, 1, 8, 5, 2, 6, 9, 5, 6, 1, 2, 1, 1, 1, 6, 8, 5, 4, 3, 2, 8, 8, 5, 5, 4, 4
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Arithmetic-Geometric Mean
FORMULA
2.6040081905309402886964274487250343309270652556376494877484132544556792805685...
MATHEMATICA
RealDigits[ArithmeticGeometricMean[1, 5], 10, 120][[1]] (* Vincenzo Librandi, Mar 12 2015 *)
RealDigits[N[3Pi/(2EllipticK[4/9]), 102]][[1]] (* Jean-François Alcover, Jun 02 2019 *)
PROG
(PARI) agm(1, 5) \\ Michel Marcus, Jun 02 2019
CROSSREFS
Cf. A068521 (agm(1,2)), A084895 (agm(1,3)), A084896 (agm(1,4)).
Sequence in context: A016590 A079461 A220233 * A021388 A011040 A274402
KEYWORD
nonn,cons,easy
AUTHOR
Eric W. Weisstein, Jun 10 2003
STATUS
approved