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A261979 Expansion of (elliptic_K / elliptic_E)^(1/2) in powers of q. 5
1, 4, 0, -16, 16, 120, -128, -928, 1056, 7572, -8960, -63408, 77248, 540504, -672000, -4665824, 5888832, 40656072, -51913728, -356835664, 459890400, 3150052992, -4090609024, -27939033312, 36509767552, 248772971228, -326815190784, -2222432164768, 2932886151552, 19910399315736 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..29.

FORMULA

See A261976 for the g.f. for K/E.

CROSSREFS

Cf. A261975 (E/K), A261977 ((E/K)^(1/2)), A261978 ((E/K)^(1/4)).

Cf. A261976 (K/E), A261980 ((K/E)^(1/4)).

Cf. A004018 (elliptic K(q)), A194094 (elliptic E(q)), A115977 (elliptic k(q)^2).

Sequence in context: A167359 A259491 A292180 * A007216 A057378 A247120

Adjacent sequences:  A261976 A261977 A261978 * A261980 A261981 A261982

KEYWORD

sign

AUTHOR

Joerg Arndt, Sep 07 2015

STATUS

approved

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Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)