0,22

a(A159452(n)) = 0;

a(A159453(n)) = n and a(m) <> n for m < A159453(n).

R. Zumkeller, Table of n, a(n) for n = 0..10000

Robert G. Wilson v, English names for the numbers from 0 to 11159 without spaces or hyphens

n=19->nineteen: a(19) = #{nine} = 1;

n=20->twenty: a(20) = #{} = 0;

n=21->twentyone: a(21) = #{one, twenty} = 2.

A001477.

Sequence in context: A055178 A174847 A215887 * A103159 A063056 A174835

Adjacent sequences: A159448 A159449 A159450 * A159452 A159453 A159454

nonn,word

Reinhard Zumkeller, Apr 12 2009

approved