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 1-10 of 10 results.

A005734 Incomplete version of A001049.

Original entry on oeis.org

14, 23, 28, 33, 42, 49, 59, 66, 77, 86, 96, 103, 110
Offset: 1

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A100508 Erroneous version of A001049.

Original entry on oeis.org

8, 14, 23, 28, 34, 42, 51, 59, 68, 77, 86, 96, 103, 110, 116, 125
Offset: 1

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Comments

It is a common misconception that the stop between 28th Street and Grand Central is 34th Street. Although there is an exit to 34th Street, this is officially the 33rd Street stop.

Crossrefs

A134445 Erroneous version of A001049.

Original entry on oeis.org

8, 14, 23, 28, 34, 42, 49
Offset: 1

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Author

N. J. A. Sloane, Sep 04 2009

Keywords

A000053 Local stops on New York City 1 Train (Broadway-7 Avenue Local) subway.

Original entry on oeis.org

14, 18, 23, 28, 34, 42, 50, 59, 66, 72, 79, 86, 96, 103, 110, 116, 125, 137, 145, 157, 168, 181, 191, 207, 215, 225, 231, 238, 242
Offset: 1

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Comments

These are the numbered stops for the #1 train, as of February 2000.

References

  • John L. Casti, Reality Rules: Picturing the World in Mathematics, Wiley, 1992, Volume 2, page 112, exercise 2.
  • James Gleick, Faster, Vintage Books, NY, 2000 (see pp. 259-261).
  • Metropolitan Transportation Authority, "The [Subway] Map," 2007.

Crossrefs

A051419 is essentially the same, but has a(5) = 33 instead of 34.

Extensions

Line number updated from #9 to IRT #1 by Lee A. Newberg, Sep 09 2010

A000054 Local stops on New York City A line subway.

Original entry on oeis.org

4, 14, 23, 34, 42, 50, 59, 72, 81, 86, 96, 103, 110, 116, 125, 135, 145, 155, 163, 168, 175, 181, 190, 200, 207
Offset: 1

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Comments

These are the numbered stops for the A train, as of February 2000.
The Dyckman Street station used to be called Dyckman Street--200th Street, though there was never a 200th Street. - Charles R Greathouse IV, Nov 26 2018

Crossrefs

A007826 Numbered stops on the Market-Frankford rapid transit (SEPTA) railway line in Philadelphia, PA USA.

Original entry on oeis.org

2, 5, 8, 11, 13, 15, 30, 34, 40, 46, 52, 56, 60, 63, 69
Offset: 1

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Formally abbreviated as The Blue Line (and known informally as 'The El'), the Market-Frankford Line extends East to West from slightly to the east of 2nd Street through the city line to the western suburbs at 63rd Street and then on to 69th Street Transportation Center, lined up almost entirely with the major dividing thoroughfare Market Street. It is actually a subway at the eastern end of this portion and through to beyond the 40th Street stop (a(1)-a(9) represent subway stops), passing under the Schuylkill River (along with trolley lines 10, 11, 13, 34 and 36) closer to 30th than to 15th Street. The only non-numbered stop on this end is suburban Milbourne between 63rd and 69th. The 'Frankford end' runs in a somewhat northeasterly direction and has all stops only with non-number names (and is entirely above ground). The semi-express A and B versions of the train both skip certain stops at peak travel times, and the only regular trains are unmarked or one of these two versions. The train is substituted for with bus service during overnight hours. - James G. Merickel, Mar 19 2014

References

  • Ayshe Ozbekhan, Letter to N. J. A. Sloane, Oct 04, 1994.

Crossrefs

Formula

a(n) = 2 + 3 n - binomial(n, 4) + 3 binomial(n, 5) + 7 binomial(n, 6) - 66 binomial(n, 7) + 248 binomial(n, 8) - 679 binomial(n, 9) + 1554 binomial(n, 10) - 3158 binomial(n, 11) + 5897 binomial(n, 12) - 10352 binomial(n, 13) + 17384 binomial(n, 14).

A208360 Numbered stops on the Lexington Avenue Express (#5) Subway in New York City.

Original entry on oeis.org

14, 42, 59, 86, 125, 138, 149, 149, 174, 180
Offset: 1

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Author

Joe Stillman, Feb 25 2012

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Comments

At present there is no stop at 96th St. There are two successive stops on 149th St: E 149th St and Grand Concourse, then E 149 St and 3rd Ave.

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Extensions

Corrected by Susanna Cuyler and N. J. A. Sloane, Jan 09 2023

A011554 Stops with numerical values for A Train (8 Avenue express) in Manhattan, as of January 2023.

Original entry on oeis.org

4, 14, 34, 42, 59, 125, 145, 168, 175, 181, 190, 200, 207
Offset: 1

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Author

Steve Cellum (steve(AT)boxhill.com), Dec 11 1996

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Crossrefs

Extensions

Edited by N. J. A. Sloane, Jan 03 2023

A208359 Numbered stops on the IRT-Lexington Avenue Express (#4) Subway in New York City.

Original entry on oeis.org

14, 42, 59, 86, 125, 138, 149, 161, 167, 170, 176, 183
Offset: 1

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Author

Joe Stillman, Feb 25 2012

Keywords

Crossrefs

Extensions

Edited by Susanna Cuyler and N. J. A. Sloane, Jan 09 2023

A051419 Local stops on New York City 1 Train (Broadway-7 Avenue Local) subway, but with 33rd St instead of 34th St.

Original entry on oeis.org

14, 18, 23, 28, 33, 42, 50, 59, 66, 72, 79, 86, 96, 103, 110, 116, 125, 137, 145, 157, 168, 181, 191, 207, 215, 225, 231, 238, 242
Offset: 1

Views

Author

Paul L. Chessin (pchess(AT)ix.netcom.com)

Keywords

Comments

Alternative version of A000053, which is the main entry for this train.

Crossrefs

Cf. A000053 (has a(5) = 34), A000054, A001049, A007826, A011554, A208359, A208360.
Showing 1-10 of 10 results.