A291664 Numbers beginning and ending with a vowel in Danish.

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

Offset: 1

Author

Halfdan Skjerning, Aug 29 2017

Keywords

• nonn
• word

Comments

The sequence of words is: otte, elleve, enogtyve, otteogtyve, enogtredive, otteogtredive.

In Danish, when pronouncing a two-digit number, the last number is mentioned first; for example, '21' is "enogtyve" ["one-and-twenty"], and '121' is "ethundredeogenogtyve" ["one-hundred-and-one-and-twenty"].

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

• Brady Haran and Tom Scott, 58 and other Confusing Numbers, Numberphile video (2015)
• Wikipedia, List of numbers in various languages

Crossrefs

Cf. A000861, A079741, A098060, A247751, A291621, A291663.

Formula

All numbers beginning with '1' or '8', except for two-digit 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.