A164838 Number of letters in n-th prime (in Dutch).

4, 4, 4, 5, 3, 7, 9, 9, 13, 14, 11, 13, 12, 13, 14, 13, 14, 11, 13, 13, 14, 15, 13, 14, 15, 10, 11, 12, 12, 14, 21, 18, 20, 20, 21, 19, 21, 19, 20, 21, 22, 19, 20, 21, 22, 22, 14, 24, 25, 25, 23, 24, 23, 23, 23, 24, 24, 26, 23, 26, 23

Offset: 1

Author

Ivan Panchenko, Aug 28 2009

Keywords

• nonn
• word
• more

Comments

The 'ij' in 'vijf' (five) has been counted as two letters here, as in A090589.

Examples

			a(1) = 4 because the first prime is 2, and it has in the Dutch language (twee) 4 letters.
		

Crossrefs

Cf. A090589.

Formula

a(n) = A090589(prime(n)). - Michel Marcus, Sep 05 2013

Extensions

a(21)-a(25) from Charles R Greathouse IV, Aug 26 2017

a(26)-a(60) from J.W.L. (Jan) Eerland, Jun 27 2023