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 1-3 of 3 results.

A114181 Floor of log base 10 of sequence A029722.

Original entry on oeis.org

3, 9, 27, 2, 0, 0, 0, 0, 0
Offset: 1

Views

Author

Greg Huber, Feb 03 2006

Keywords

Examples

			a(3) = 27 since Floor(Log_10(octillion)) = 27 and
a(6) = 0 since Floor(Log_10(four)) = Floor(0.602...) = 0.

Crossrefs

Cf. A029722, A111098.

A111098 Smallest nonnegative integer containing the n-th letter of the alphabet (in US English), or -1 if no such integer exists.

Original entry on oeis.org

1000, 1000000000, 1000000000000000000000000000, 100, 0, 4, 8, 3, 5, -1, -1, 11, 1000000, 1, 0, 1000000000000000000000000, 1000000000000000, 0, 6, 2, 4, 5, 2, 6, 20, 0
Offset: 1

Views

Author

Greg Huber, Oct 13 2005

Keywords

Comments

This is assuming the use of the short scale for large numbers.
In British English, the first term is 101 (from "and").

Links

Crossrefs

Cf. A147876. Differs from A029722 because "zero" is permitted.

Extensions

Sequence completed by Daniel Mondot, Nov 21 2008

A208934 Smallest positive integer containing the n-th letter of the alphabet in German, including the umlauts and ß (sharp s), but treating the letters a, o, u separately from their umlauted versions, or -1 if no such integer exists.

Original entry on oeis.org

8, 7, 6, 3, 1, 5, 20, 6, 1, -1, 1000000000000000000000000000000000000000000000000, 11, 1000000, 1, 1000000, 1000000000000000000000000000000000000000000, 1000000000000000000000000, 3, 1, 8, 9, 4, 2, 1000000000000000000000000000000000000, -1, 2, -1, 12, 5, 30
Offset: 1

Views

Author

Fred Bayer, Mar 03 2012

Keywords

Comments

Umlauts are considered distinct letters, so the smallest number containing an "o" is "eine Million", not "zwölf". Uses long scale as usual in German.
The values for n=27, ..., 30 refer to the letters ä, ö, ü, ß which are usually appended, in this order, at the end of the German alphabet.

Examples

			a(cht), (sie)b(en), (se)c(hs), d(rei), e(ins), f(ünf), (zwanzi)g, (sec)h(s), (e)i(ns), ---, (o)k(tillion), (e)l(f), M(illion), (ei)n(s), (Milli)o(n), (Se)p(tillion), Q(uadrillion), (d)r(ei), (ein)s, (ach)t,(ne)u(n), v(ier), (z)w(ei), (Se)x(tillion), ---, z(wei), ---, (zw)ö(lf), (f)ü(nf), (drei)ß(ig).

Links

Crossrefs

German version of A029722

Extensions

Fixed example (Oktillion)
Example completed, and sequence extended to n=30 by M. F. Hasler, Jun 23 2013
Definition adjusted by Felix Fröhlich, Mar 20 2016
Showing 1-3 of 3 results.

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

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