A094948 Number of letters in n^2.

4, 3, 4, 4, 7, 10, 9, 9, 9, 9, 10, 19, 19, 19, 19, 20, 18, 20, 22, 20, 11, 19, 21, 21, 21, 20, 20, 22, 22, 20, 11, 19, 21, 21, 29, 31, 30, 32, 31, 31, 21, 30, 32, 32, 31, 21, 28, 25, 27, 25, 22, 24, 27, 27, 29, 23, 32, 32, 34, 33, 23, 34, 34, 33, 21, 32, 32, 33, 32, 32, 23, 20, 32

Offset

0,1

Links

Table of n, a(n) for n=0..72.

Formula

a(n) = A005589(A000290(n)). - Michel Marcus, Jun 21 2013

Example

a(14)=19 because 14^2=196, which can be written out as 'one-hundred-ninety-six' which has 19 letters.

Crossrefs

Cf. A000290, A005589.

Sequence in context: A332810 A088752 A239594 * A332472 A049788 A002558

Adjacent sequences: A094945 A094946 A094947 * A094949 A094950 A094951

Keyword

easy,nonn,word

Author

Gregory S. Thoman (fealuinix(AT)yahoo.com), May 26 2004

Extensions

More terms from Kristen Loughman (kloughma(AT)ashland.edu), Jan 26 2006

a(0)=4 inserted and a(7), a(12), a(21), a(29) corrected by Georg Fischer, Dec 18 2020

Status

approved