A108017 Position of integer n in the list of first n natural numbers written out in English (without "and") and arranged in alphabetical order.

1, 2, 2, 1, 1, 4, 4, 1, 4, 8, 2, 11, 10, 5, 3, 11, 10, 2, 9, 19, 21, 22, 22, 21, 21, 24, 24, 21, 24, 16, 17, 18, 18, 17, 20, 20, 17, 20, 5, 6, 7, 7, 6, 6, 9, 9, 6, 9, 4, 5, 6, 6, 5, 5, 8, 8, 5, 8, 33, 34, 35, 35, 34, 34, 37, 37, 34, 37, 32, 33, 34, 34, 33, 33, 36, 36, 33, 36, 2, 3, 4, 4, 3

Offset

1,2

Links

Table of n, a(n) for n=1..83.

Example

We have a(19)=9 because of the ordered list: EIGHT, EIGHTEEN, ELEVEN, FIFTEEN, FIVE, FOUR, FOURTEEN, NINE, NINETEEN, ..., TWELVE, TWO.

Prog

(PARI) lista() = {my(v = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen", "twenty"], vs); for (i=1, #v, vp = vector(i, k, v[k]); vs = vecsort(vp); for (k=1, #vp, if (vs[k] == v[i], print1(k, ", "); break); ); ); } \\ Michel Marcus, Jan 03 2019

Crossrefs

Cf. A214095 (in French).

Sequence in context: A053390 A140643 A331409 * A293208 A247364 A301895

Adjacent sequences: A108014 A108015 A108016 * A108018 A108019 A108020

Keyword

nonn,word

Author

Lekraj Beedassy, May 31 2005

Status

approved