cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-4 of 4 results.

A002926 Low temperature series for spin-1/2 Ising magnetic susceptibility on 3-dimensional simple cubic lattice.

Original entry on oeis.org

0, 0, 1, 0, 12, -14, 135, -276, 1520, -4056, 17778, -54392, 213522, -700362, 2601674, -8836812, 31925046, -110323056, 393008712, -1369533048, 4844047090, -16947396000, 59723296431, -209328634116, 736260986208, -2582605180212, 9074182912884
Offset: 1

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Author

Keywords

References

  • C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 421.
  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.
  • N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
  • C. Vohwinkel, personal communication.

Crossrefs

Cf. A002913 (high temperature series); other quantities: A002915 (antiferromagnetic susceptibility), A002891 (partition function), A002929 (magnetization); other lattices: A002927 (square), A002924 (f.c.c.), A002925 (b.c.c.).

Extensions

Corrections and updates from Steven Finch
a(25)-a(27) from Bhanot et al. added by Andrei Zabolotskii, Feb 09 2022

A002928 Magnetization for square lattice.

Original entry on oeis.org

1, 0, -2, -8, -34, -152, -714, -3472, -17318, -88048, -454378, -2373048, -12515634, -66551016, -356345666, -1919453984, -10392792766, -56527200992, -308691183938, -1691769619240, -9301374102034
Offset: 0

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Author

Keywords

References

  • N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
  • J. M. Yeomans, Statistical mechanics of phase transitions, Oxford Univ. Press, 1992, p. 93.

Crossrefs

Cf. other structures: A007206, A007207, A002929, A002930, A003193, A003196.
Cf. Potts model: A057374, A057378.
Cf. A002927 (susceptibility).

Programs

  • Maple
    series((1+x)^(1/4)*(1-6*x+x^2)^(1/8)/(1-x)^(1/2),x,40).
  • Mathematica
    CoefficientList[Series[(1+x)^(1/4)*(1-6*x+x^2)^(1/8)/(1-x)^(1/2), {x, 0, 20}], x] (* Vaclav Kotesovec, Apr 27 2024 *)

Formula

n*a(n) + 6*(-n+1)*a(n-1) + 4*a(n-2) + 6*(n-3)*a(n-3) + (-n+4)*a(n-4) = 0. - R. J. Mathar, Mar 08 2013
a(n) ~ -Gamma(1/8) * (1 + sqrt(2))^(2*n - 1/2) / (Pi * 2^(57/16) * n^(9/8)). - Vaclav Kotesovec, Apr 27 2024

A003193 Magnetization for body-centered cubic lattice.

Original entry on oeis.org

1, 0, 0, 0, -2, 0, 0, -16, 18, 0, -168, 384, -314, -1632, 6264, -9744, -10014, 86976, -205344, 80176, 1009338, -3579568, 4575296, 8301024, -54012882, 112640896, -5164464, -694845120, 2160781086
Offset: 0

Views

Author

Keywords

References

  • C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 421.
  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Crossrefs

Cf. A002929 (cubic), A003196 (f.c.c.), A002925 (ferromagnetic susceptibility), A003194 (antiferromagnetic susceptibility).

Extensions

a(27)-a(28) from Sykes et al. (1973) added by Andrey Zabolotskiy, Feb 16 2022

A007270 Low-temperature series for magnetization in zero-field 3-state Potts model on cubic lattice.

Original entry on oeis.org

1, 0, 0, 0, 0, 0, -3, 0, 0, 0, -18, -18, 42, 0, -135, -270, 477, 648, -1980, -2988, 4140, 14052, -21690, -52920, 55020, 201852, -162774, -914538, 555750, 3229524, -1188327, -13301370, 1402686, 52334268, 95751, -195398208, -58983558, 761838084, 359664885, -2910516786, -1946958399, 10681132140, 10207745148, -40522674258
Offset: 0

Views

Author

Keywords

References

  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Crossrefs

Cf. other structures: A007271 (b.c.c. lattice), A057374 (square lattice), A057382 (hexagonal lattice), A057390 (honeycomb net), A057398 (kagome net). Cf. A002929 (Ising model).

Extensions

a(30) corrected, terms a(34) and beyond added from Guttmann & Enting by Andrey Zabolotskiy, Feb 06 2022
Missing term a(36) inserted, name clarified by Andrey Zabolotskiy, Nov 17 2024
Showing 1-4 of 4 results.