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 A261976 Expansion of elliptic_K / elliptic_E in powers of q. 6
 1, 8, 16, -32, -96, 368, 960, -3392, -8896, 31528, 82656, -292704, -767616, 2719024, 7130496, -25257408, -66235776, 234616720, 615265872, -2179359392, -5715218752, 20244124928, 53088812352, -188048196544, -493143336192, 1746784492472, 4580821023328, -16225925666624 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..27. FORMULA G.f.: T3^5 / (T4^4 * T3 + 4*q * d/dq T3) where T3 = theta_3(q) and T4 = theta_4(q). CROSSREFS Cf. A004018 (elliptic K(q)), A194094 (elliptic E(q)), A115977 (elliptic k(q)^2). Cf. A261979 ((K/E)^(1/2)), A261980 ((K/E)^(1/4)). Cf. A261975 (E/K), A261977 ((E/K)^(1/2)), A261978 ((E/K)^(1/4)). Sequence in context: A206375 A146541 A363014 * A291124 A239280 A043111 Adjacent sequences: A261973 A261974 A261975 * A261977 A261978 A261979 KEYWORD sign AUTHOR Joerg Arndt, Sep 07 2015 STATUS approved

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Last modified September 12 07:52 EDT 2024. Contains 375850 sequences. (Running on oeis4.)