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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A089204 Triangle read by rows: T(n,k) = numerator of P(n, k) = 1 - n!/(n^k*(n-k)!).

Original entry on oeis.org

1, 1, 7, 1, 5, 29, 1, 13, 101, 601, 1, 4, 13, 49, 319, 1, 19, 223, 2041, 16087, 116929, 1, 11, 151, 407, 3781, 16069, 130757, 1, 25, 131, 1627, 17443, 56809, 526961, 4778489, 1, 7, 62, 436, 1061, 2936, 30683, 155683, 1561933
Offset: 1

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Author

Artemario Tadeu Medeiros da Silva (artemario(AT)uol.com.br), Dec 09 2003

Keywords

Comments

Triangle of numbers P(n,k) begins:
.............................1/2
......................1/3...........7/9
...............1/4...........5/8............29/32
.........1/5.........13/25.........101/125..........601/625
...1/6.........4/9..........13/18...........49/54...............319/324

Examples

			a(8) = 13 because 13 is numerator of 13/25 = P(5,3).
a(15) = 319 because 319 is numerator of 319/324 = P(6,6).

Crossrefs

Cf. A089206, A088141.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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