1,3

0 <= #{i: 1<=i<=n and ENW(i)<=ENW(a(n))} - #{i: 1<=i<=n and ENW(i)>ENW(a(n))} <= 1, where ENW(n) = number word for n in English.

R. Zumkeller, Table of n, a(n) for n = 1..1000

Wikipedia, Median

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

a(7)=7 ->seven: five<four<one<[seven]<six<three<two;

a(8)=1 ->one: eight<five<four<[one]<seven<six<three<two;

a(9)=1 ->one: eight<five<four<nine<[one]<seven<six<three<two.

A000027, A157943.

Sequence in context: A179701 A276996 A102480 * A140670 A293682 A276651

Adjacent sequences: A157961 A157962 A157963 * A157965 A157966 A157967

nonn,word,look

Reinhard Zumkeller, Mar 10 2009

approved