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A140395 Number of letters in the Hindi word for the number n. 0
4, 2, 2, 3, 3, 4, 2, 3, 3, 2, 2, 5, 4, 4, 4, 5, 4, 4, 5, 5, 3, 5, 4, 4, 5, 5, 5, 6, 6, 5, 3, 5, 5, 6, 6, 6, 5, 6, 5, 7, 5, 7, 6, 8, 8, 8, 7, 8, 7, 5, 4, 6, 4, 6, 4, 4, 4, 6, 6, 4, 3, 4, 4, 5, 5, 5, 6, 4, 4, 6, 4, 6, 5, 6, 6, 6, 6, 6, 6, 5, 4, 6, 5, 6, 6, 5, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

From Sangeet Paul, May 29 2019: (Start)

What constitutes a distinct letter is determined by the following rules: all words are in Modern Standard Hindi written in the Devanagari script; a vowel, a vowel diacritic, a consonant, a consonant diacritic, or a nasal diacritic is one letter; a conjunct consonant is as many letters as the consonants conjuncted; a nuqta or a halant is not a letter; and a space between two words is not a letter.

Hindi has a unique word for every number from 0 to 99, and a unique place-value word for 100 and every power of 10 of the form 10^(2k+1) where k is a positive integer. Therefore:

a(n) = a(n mod 100) + (d(100) + a(floor(n/100) mod 10))*[floor(n/100) mod 10 > 0] + Sum_{k=1..oo} (d(10^(2k+1)) + a(floor(n/(10^(2k+1))) mod 100))*[floor(n/(10^(2k+1))) mod 100 > 0] where [] is the Iverson bracket and d() is the number of letters in a place-value word.

d(100) = 2, d(10^3) = 4, d(10^5) = 3, d(10^7) = 4, d(10^9) = 3, d(10^11) = 3, d(10^13) = 3, d(10^15) = 3, d(10^17) = 3.

In another popular convention: a vowel, or a consonant is one letter; a consonant diacritic is half a letter; a conjunct consonant is half a letter plus half as many letters as the consonants conjuncted; and a vowel diacritic, a nasal diacritic, a nuqta, a halant, or a space is not a letter. These rules change the sequence to: 2.5, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 3.5, 3, 3, 3, 3, 3, 3.5, 4, 3.5, 2, ...

(End)

LINKS

Table of n, a(n) for n=0..86.

Author?, Hindi Numbers

Critical Languages Center, Univ. Alabama, Numbers in Hindi

WikiBooks, Hindi Numbers

Index entries for sequences related to number of letters in n

Index entries for sequences related to names of numbers

CROSSREFS

Cf. A005589.

Sequence in context: A112349 A231821 A062072 * A061505 A255708 A197154

Adjacent sequences:  A140392 A140393 A140394 * A140396 A140397 A140398

KEYWORD

nonn,word

AUTHOR

Vinay Vaishampayan, Jun 19 2008, Jun 20 2008

EXTENSIONS

Links added by N. J. A. Sloane, Jun 20 2008

Offset 0 from Sangeet Paul, May 27 2019

a(21)-a(86) from Sangeet Paul, May 29 2019

STATUS

approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)