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.

A219330 Number of random selections (with replacement) needed from a normal population to assure a greater than one-half chance that the selected group contains the top 10th percentile individual, top 1st percentile individual, the 0.1 percentile, 0.01 percentile etc...

Table of values

n a(n)
1 7
2 69
3 693
4 6932
5 69315
6 693147
7 6931472
8 69314718
9 693147181
10 6931471806
11 69314718056
12 693147180560
13 6931471805600
14 69314718055995
15 693147180559945
16 6931471805599453
17 69314718055994531
18 693147180559945310
19 6931471805599453094
20 69314718055994530942

List of values

[7, 69, 693, 6932, 69315, 693147, 6931472, 69314718, 693147181, 6931471806, 69314718056, 693147180560, 6931471805600, 69314718055995, 693147180559945, 6931471805599453, 69314718055994531, 693147180559945310, 6931471805599453094, 69314718055994530942]

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

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