A305100 Least nonnegative integer which requires n letters to spell in Turkish excluding spaces and hyphens.

3, 1, 4, 0, 14, 18, 21, 24, 28, 68, 124, 128, 168, 224, 228, 268, 468, 868, 1268, 1468, 1868, 2268, 2468, 2868, 4868, 8868, 14868, 18868, 21868, 24868, 28868, 68868, 124868, 128868, 168868, 224868, 228868, 268868, 468868, 868868, 1068868, 1124868, 1128868, 1168868

Offset: 2

Author

Sezai Ata, May 25 2018

Keywords

• nonn
• word
• changed

Examples

			a(2) = 3: "üç", a(3) = 1: "bir", a(5) = 0: "sıfır"
		

Links

• Sezai Ata, MATLAB program, 2018.
• Wikibooks, Turkish numbers
• Index entries for sequences related to number of letters in n

Crossrefs

Turkish version of A134629.

Cf. A057435.

Programs

Python

from num2words import num2words
from itertools import count, islice
def f(n): return sum(1 for c in num2words(n, lang='tr') if c.isalpha())
def agen(): # generator of terms
    n, adict = 2, dict()
    for k in count(0):
        v = f(k)
        if v not in adict:
            adict[v] = k
            while n in adict:
                yield adict[n]
                n += 1
print(list(islice(agen(), 44))) # Michael S. Branicky, Sep 01 2025

Extensions

a(16)-a(41) from Daniel Suteu, May 26 2018

a(42)-a(45) from Michael S. Branicky, Sep 01 2025