login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A168087 a(n) = the smallest number whose Welsh name in the modern Decimal System contains n letters of the alphabet. 1
1, 2, 3, 7, 4, 11, 12, 15, 16, 14, 27, 24, 47, 44, 127, 124, 147, 144, 224 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

COMMENTS

The table below shows the dervivation of the sequence:

..n..Smallest.Number..Welsh.Name

..2.........1.........un

..3.........2.........dau.(m)./.dwy.(f)

..4.........3.........tair.(f)

..5.........7.........saith

..6.........4.........pedwar.(m)./.pedair.(f)

..7........11.........un.deg.un

..8........12.........un.deg.dau

..9........15.........un.deg.pump

.10........16.........un.deg.saith

.11........14.........un.deg.pedwar

.12........27.........dau.ddeg.saith

.13........24.........dau.ddeg.pedwar

.14........47.........pedwar.deg.saith

.15........44.........pedwar.deg.pedwar

.16.......127.........cant.dau.ddeg.saith

.17.......124.........cant.dau.ddeg.pedwar

.18.......147.........cant.pedwar.deg.saith

.19.......144.........cant.pedwar.deg.pedwar

.20.......224.........dau.gant.dau.ddeg.pedwar

LINKS

Table of n, a(n) for n=2..20.

TAKASUGI Shinji, The Number System of Welsh (Modern)

CROSSREFS

Sequence in context: A143528 A118810 A026259 * A168085 A287950 A287628

Adjacent sequences:  A168084 A168085 A168086 * A168088 A168089 A168090

KEYWORD

nonn,word

AUTHOR

Christopher Hunt Gribble, Nov 18 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 3 22:17 EDT 2022. Contains 357237 sequences. (Running on oeis4.)