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.

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A123205 Number of polyhexes with 24 hexagons, C_(3h) symmetry and containing 67+3n carbon atoms.

Original entry on oeis.org

1, 6, 16, 40, 133, 283, 630, 1279, 2283, 2471, 1727
Offset: 0

Views

Author

Parthasarathy Nambi, Oct 04 2006

Keywords

Crossrefs

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A123209 Number of polyhexes with 24 hexagons, D_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

1, 2, 2, 7, 12, 23, 30, 23, 53, 52, 105, 124, 206, 135, 307, 42, 113
Offset: 33

Views

Author

Parthasarathy Nambi, Oct 04 2006

Keywords

Crossrefs

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A123277 Number of polyhexes with 24 hexagons, C_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

18, 107, 427, 1490, 4590, 13298, 35971, 90268, 209337, 443940, 846043, 1440863, 2105423, 2482288, 2018188, 931601
Offset: 34

Views

Author

Parthasarathy Nambi, Oct 10 2006

Keywords

Crossrefs

Formula

Sum_n a(n) = 10623852 = A121210(24). - Andrey Zabolotskiy, Nov 15 2023

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A122096 Number of fusenes with 23 hexagons, C_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

6, 45, 145, 510, 1739, 4906, 13450, 36524, 87242, 182817, 361188, 632578, 856492, 755737, 375524
Offset: 33

Views

Author

Parthasarathy Nambi, Oct 17 2006

Keywords

Crossrefs

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A122097 Number of fusenes with 23 hexagons, C_(2v) symmetry and containing n carbon atoms.

Original entry on oeis.org

2, 9, 33, 38, 236, 126, 723, 473, 2416, 1658, 7813, 4675, 21575, 13325, 57298, 36963, 152858, 90391, 357015, 192587, 737545, 381508, 1434489, 667157, 2507225, 895538, 3385348, 777673, 3022948, 342738, 1502284
Offset: 64

Views

Author

Parthasarathy Nambi, Oct 17 2006

Keywords

Examples

			If n=64 then the number of fusenes with 23 hexagons with C_(2v) symmetry is 2.
If n=65 then the number of fusenes with 23 hexagons with C_(2v) symmetry is 9.
If n=66 then the number of fusenes with 23 hexagons with C_(2v) symmetry is 33.
If n=67 then the number of fusenes with 23 hexagons with C_(2v) symmetry is 38.
If n=94 then the number of fusenes with 23 hexagons with C_(2v) symmetry is 1502284.
		

References

  • G. Brinkmann, G. Caporossi and P. Hansen, "A Survey and New Results on Computer Enumeration of Polyhex and Fusene Hydrocarbons", J. Chem. Inf. Comput. Sci., vol. 43 (2003) 842-851. See Table 9 column 7 on page 849.

Crossrefs

A123140 Number of benzenoids with 23 hexagons, D_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

1, 3, 3, 6, 13, 19, 24, 35, 45, 79, 70, 108, 70, 169, 0, 103
Offset: 32

Views

Author

Parthasarathy Nambi, Oct 01 2006

Keywords

Examples

			If 2n=64 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 1.
If 2n=94 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 103.
		

Crossrefs

Formula

Sum_n a(n) = 748 = A121211(23). - Andrey Zabolotskiy, Nov 09 2023

Extensions

Name and offset corrected and a(46) = 0 inserted by Andrey Zabolotskiy, Nov 09 2023

A123141 Number of benzenoids with 23 hexagons, C_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

6, 45, 145, 510, 1706, 4697, 12446, 32297, 73731, 147440, 274532, 454304, 594505, 514849, 245895
Offset: 33

Views

Author

Parthasarathy Nambi, Oct 01 2006

Keywords

Crossrefs

Formula

Sum_n a(n) = 2357108 = A121210(23). - Andrey Zabolotskiy, Nov 15 2023

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A123595 Number of fusenes with 24 hexagons, C_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

18, 107, 427, 1490, 4649, 13793, 38582, 100944, 246047, 548966, 1103167, 1994983, 3083825, 3819606, 3274338, 1664015
Offset: 34

Views

Author

Parthasarathy Nambi, Nov 14 2006

Keywords

Crossrefs

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

A123598 Number of fusenes with 25 hexagons, C_(2v) symmetry and containing n carbon atoms.

Original entry on oeis.org

3, 24, 29, 131, 114, 670, 423, 2307, 1353, 6814, 4581, 21998, 13890, 64640, 38789, 170723, 104802, 441222, 269058, 1095003, 610892, 2398941, 1239007, 4754880, 2316724, 8787858, 3726026, 14143599, 4553620, 17450804, 3642533, 14388434
Offset: 69

Views

Author

Parthasarathy Nambi, Nov 14 2006

Keywords

Examples

			If n=69 then the number of fusenes with 25 hexagons with C_(2v) symmetry is 3.
If n=70 then the number of fusenes with 25 hexagons with C_(2v) symmetry is 24.
If n=71 then the number of fusenes with 25 hexagons with C_(2v) symmetry is 29.
If n=72 then the number of fusenes with 25 hexagons with C_(2v) symmetry is 131.
If n=100 then the number of fusenes with 25 hexagons with C_(2v) symmetry is 14388434.
		

References

  • G. Brinkmann, G. Caporossi and P. Hansen, "A Survey and New Results on Computer Enumeration of Polyhex and Fusene Hydrocarbons", J. Chem. Inf. Comput. Sci., vol. 43 (2003) 842-851. See Table 11 column 7 on page 850.

Crossrefs

A123600 Number of fusenes with 26 hexagons, D_(2h) symmetry and containing 2n carbon atoms.

Original entry on oeis.org

1, 5, 9, 8, 13, 32, 45, 91, 92, 145, 163, 275, 258, 766, 292
Offset: 36

Views

Author

Parthasarathy Nambi, Nov 14 2006

Keywords

Crossrefs

Extensions

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023
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