A097960 Arrange 1-digit numbers in Spanish in alphabetical order, then 2-digit numbers, then 3-digit numbers, etc.

0, 5, 4, 2, 9, 8, 6, 7, 3, 1, 14, 50, 55, 54, 52, 59, 58, 56, 57, 53, 51, 40, 45, 44, 42, 49, 48, 46, 47, 43, 41, 19, 18, 16, 17, 10, 12, 90, 95, 94, 92, 99, 98, 96, 97, 93, 91, 80, 85, 84, 82, 89, 88, 86, 87, 83, 81, 11, 15, 60, 65, 64, 62, 69, 68, 66, 67, 63, 61, 70, 75, 74, 72

Offset: 1

Author

Colin Backhurst (colin.backhurst(AT)ntlworld.com), Sep 21 2004

Keywords

• easy
• nonn
• word
• base

Comments

In the 2007 Spanish film "Fermat's Room", a mathematician solves the "enigma" of how the numbers 5, 4, 2, 9, 8, 6, 7, 3, 1 are ordered. - Jonathan Sondow, Jul 20 2012

Examples

			0="cero", 5="cinco", 4="cuatro", 2="dos", 9="nueve", 8="ocho", 6="seis", 7="siete", 3="tres", 1="un".
		

Links

• Álvar Ibeas, Table of n, a(n) for n = 1..10001
• Wikipedia, Fermat's Room

Crossrefs

Cf. A000052 (English).