

A291664


Numbers beginning and ending with a vowel in Danish.


0



8, 11, 21, 28, 31, 38, 41, 48, 100, 102, 103, 104, 108, 109, 110, 111, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 802, 803, 804, 808, 809, 811, 820, 821, 822, 823, 824, 825, 826
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OFFSET

1,1


COMMENTS

The sequence of words is: otte, elleve, enogtyve, otteogtyve, enogtredive, otteogtredive.
In Danish, when pronouncing a twodigit number, the last number is mentioned first; for example, '21' is "enogtyve" ["oneandtwenty"], and '121' is "ethundredeogenogtyve" ["onehundredandoneandtwenty"].
Please note that '100' can be both spelled and pronounced as "hundrede", "ethundrede", "hundred" and "ethundred"; similarly, '1000' can be spelled "tusinde", "ettusinde", "tusind" and "ettusind". The "et" in "ethundrede" is often omitted in daily speech.
Intersection of A291621 and A291663.  Iain Fox, Oct 17 2017


LINKS

Table of n, a(n) for n=1..59.
Brady Haran and Tom Scott, 58 and other Confusing Numbers, Numberphile video (2015)
Wikipedia, List of numbers in various languages


FORMULA

All numbers beginning with '1' or '8', except for twodigit numbers that do not end in '1' or '8', and that also end with 02, 03, 04, 08, 09, 10, 3n, 4n, n00, or n000 will begin and end with a vowel.


CROSSREFS

Cf. A000861, A079741, A098060, A247751, A291621, A291663.
Sequence in context: A213084 A243520 A129730 * A318347 A195160 A053701
Adjacent sequences: A291661 A291662 A291663 * A291665 A291666 A291667


KEYWORD

nonn,word


AUTHOR

Halfdan Skjerning, Aug 29 2017


STATUS

approved



