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 1-2 of 2 results.

A171075 Total number of balls on lawn in variant of the tennis ball problem (cf. A171074).

Original entry on oeis.org

1, 20, 190, 1226, 6878, 35962, 180080
Offset: 1

Views

Author

N. J. A. Sloane, Sep 06 2010

Keywords

Comments

Apparently equals A051133(n) - A005893(n) after 1st term.
Note that A051133 yields the totals of all C(2n, n) ball sets and A005893 and A090288 are the respective totals of impossible combinations given the rules.

References

  • David Scambler, Just for fun, more tennis balls, Posting to the Sequence Fans Mailing List, Aug 25 2010.

A171076 Total number of balls in room in variant of the tennis ball problem (cf. A171074).

Original entry on oeis.org

2, 20, 188, 1222, 6872, 35954, 180070
Offset: 1

Views

Author

N. J. A. Sloane, Sep 06 2010

Keywords

Comments

Apparently equals A051133(n) - A090288(n-1) after 1st term.
Note that A051133 yields the totals of all C(2n, n) ball sets and A005893 and A090288 are the respective totals of impossible combinations given the rules.

References

  • David Scambler, Just for fun, more tennis balls, Posting to the Sequence Fans Mailing List, Aug 25 2010.
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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