A104059 Each number is the rank in the alphabet of a letter (and "0" stands for a space). After substitution one reads (in English): "twenty twentythree five fourteen twenty twentyfive zero..." which is exactly the sequence itself (without hyphens).

20, 23, 5, 14, 20, 25, 0, 20, 23, 5, 14, 20, 25, 20, 8, 18, 5, 5, 0, 6, 9, 22, 5, 0, 6, 15, 21, 18, 20, 5, 5, 14, 0, 20, 23, 5, 14, 20, 25, 0, 20, 23, 5, 14, 20, 25, 6, 9, 22, 5, 0, 26, 5, 18, 15, 0, 20, 23, 5, 14, 20, 25, 0, 20, 23, 5, 14, 20, 25, 20, 8, 18, 5, 5, 0, 6, 9, 22, 5, 0, 6, 15

Offset

1,1

Links

Nathaniel Johnston, Table of n, a(n) for n = 1..10000

Maple

nlim := 82: words := ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty", "twentyone", "twentytwo", "twentythree", "twentyfour", "twentyfive", "twentysix"]: A104059str := "twenty": lettonum := proc (let) if let = " " then return 0: end if: return convert(let, bytes)[1]-96: end proc: printf("20, "): for n from 2 to nlim do t := lettonum(A104059str[n]): A104059str := cat(A104059str, " ", words[t+1]): printf("%d, ", t): end do: # Nathaniel Johnston, Oct 28 2013

Crossrefs

Sequence in context: A367620 A322323 A139357 * A104057 A268490 A153717

Adjacent sequences: A104056 A104057 A104058 * A104060 A104061 A104062

Keyword

base,easy,nonn,word

Author

Eric Angelini, Mar 02 2005

Extensions

a(27) and a(28) corrected by J.J.J. Klein, Oct 28 2013

Status

approved