A334631 a(n) = number of letters in the sum of all previous terms, with a(1) = 1 (in US English, excluding spaces and hyphens).

1, 3, 4, 5, 8, 9, 6, 9, 9, 9, 10, 12, 10, 10, 14, 18, 21, 20, 22, 10, 13, 21, 19, 20, 21, 16, 18, 23, 20, 21, 14, 18, 21, 20, 22, 22, 19, 22, 16, 21, 22, 18, 21, 20, 22, 12, 18, 18, 22, 19, 22, 18, 22, 20, 22, 23, 18, 21, 20, 22, 22

Offset: 1

Author

Robert Bilinski, Sep 14 2020

Keywords

• nonn
• word
• easy
• less

Examples

			a(4) = 5, as a(1) + a(2) + a(3) = 8 and 8 has 5 letters in English.
		

Crossrefs

Cf. A000655, A005589.