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A242939 Decimal expansion of c_o, coefficient associated with the asymptotic evaluation c_o*2^(n^2/4) of the number of subspaces of the n-dimensional vector space over the finite field F_2, n being odd. 3
7, 3, 7, 1, 9, 4, 9, 4, 9, 0, 7, 6, 6, 2, 2, 7, 3, 3, 7, 5, 4, 1, 4, 1, 1, 8, 3, 3, 6, 7, 2, 8, 6, 8, 2, 3, 7, 7, 1, 6, 1, 5, 2, 3, 9, 5, 6, 3, 9, 7, 4, 0, 7, 7, 8, 9, 6, 4, 7, 5, 7, 5, 9, 1, 7, 1, 3, 3, 4, 7, 7, 8, 2, 2, 2, 8, 5, 8, 7, 6, 5, 7, 6, 8, 3, 3, 1, 3, 3, 8, 3, 0, 2, 7, 4, 3, 6, 6, 5, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 5.7 Lengyel's constant, p. 318.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..2500

EXAMPLE

7.37194949076622733754141...

MATHEMATICA

digits = 100; EllipticTheta[2, 0, 1/2]/NProduct[1 - 2^(-j), {j, 1, Infinity}, WorkingPrecision -> digits + 10, NProductFactors -> digits] // RealDigits[#, 10, digits]& // First

RealDigits[EllipticTheta[2, 0, 1/2]/QPochhammer[1/2, 1/2], 10, 100][[1]] (* Vladimir Reshetnikov, Oct 17 2016 *)

CROSSREFS

Cf. A048651, A086053, A242938, A182176.

Sequence in context: A021856 A259453 A096715 * A242938 A085835 A153624

Adjacent sequences:  A242936 A242937 A242938 * A242940 A242941 A242942

KEYWORD

nonn,cons

AUTHOR

Jean-Fran├žois Alcover, May 27 2014

STATUS

approved

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Last modified June 17 04:26 EDT 2019. Contains 324183 sequences. (Running on oeis4.)