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 1-3 of 3 results.

A002891 Low temperature series for spin-1/2 Ising partition function on 3-dimensional simple cubic lattice.

Original entry on oeis.org

1, 0, 0, 1, 0, 3, -3, 15, -30, 101, -261, 807, -2308, 7065, -21171, 65337, -200934, 627249, -1962034, 6192066, -19610346, 62482527, -199807110, 641837193, -2068695927, 6691611633, -21710041944, 70645706963, -230488840446, 753903842400, -2471624380458, 8120879664294, -26736570257010
Offset: 0

Views

Author

N. J. A. Sloane, C. Vohwinkel

Keywords

References

  • 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).

Crossrefs

Cf. A002926 (ferromagnetic susceptibility), A002915 (antiferromagnetic susceptibility), A001393 (high-temperature), A002890 (square lattice), A002892 (f.c.c. lattice), A030045 (4D cubic), A030047 (5D cubic).

Extensions

Corrections and updates from Steven Finch
"Free energy" changed back to "partition function" (basically the exponential of the free energy) in the name by Andrey Zabolotskiy, Feb 12 2022
a(28)-a(32) added by Andrey Zabolotskiy, Jun 30 2022 using Andrén's data (see his Table 2, column a_n for the coefficients of the expansion of the logarithm of the g.f. of this sequence)

A030044 High temperature series in v^2 = tanh(J/kT)^2 for spin-1/2 Ising partition function on 4D simple cubic lattice, divided by 2/(1+v)^4.

Original entry on oeis.org

1, 0, 6, 76, 1389, 30608, 769646, 21242984, 627520006
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.

Crossrefs

Extensions

"Free energy" corrected to "partition function" (basically the exponential of the free energy) in the name and more details given by Andrey Zabolotskiy, Feb 11 2022

A030046 Low temperature series for spin-1/2 Ising magnetic susceptibility on 4D simple cubic lattice (divided by 4).

Original entry on oeis.org

0, 0, 0, 0, 1, 0, 0, 16, -18, 0, 252, -576, 423, 3648, -13344, 19152, 40294, -259440, 562020, 95264, -4307021, 13303104, -11632992, -57973856, 271183914, -455166560, -482496656, 4831425864, -12082047182, 4185256128, 73401528384, -266390485184, 330255999226, 851455636352, -5115138468772
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.
  • C. Vohwinkel, personal communication.

Crossrefs

Cf. A030045.

Extensions

a(30)-a(34) using Vohwinkel & Weisz's data added by Andrey Zabolotskiy, Aug 10 2022
Showing 1-3 of 3 results.