A072789 The size of the parenthesizations obtained with the global ranking/unranking scheme presented in A072787-A072788.

1, 2, 2, 3, 3, 3, 4, 3, 4, 4, 4, 4, 3, 4, 5, 4, 5, 4, 4, 4, 5, 5, 5, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 5, 4, 6, 5, 5, 6, 5, 5, 6, 5, 6, 6, 5, 5, 5, 6, 6, 5, 6, 5, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 5, 6, 5, 6, 6, 6, 7, 6, 6, 7, 5, 6, 7, 7, 6, 6, 6, 5, 6, 7, 6, 7, 7, 6, 6, 7, 7, 7, 6, 5, 5

Offset

1,2

Comments

To get a cleaner looking table, the term a(0)=0 is not listed here.

Links

Table of n, a(n) for n=1..105.

Crossrefs

A072790(n) gives the maximum position where the value n occurs. See the comment at A072787. Same triangle computed modulo 2: A072792.

Sequence in context: A231335 A271237 A062558 * A126302 A200648 A264982

Adjacent sequences: A072786 A072787 A072788 * A072790 A072791 A072792

Keyword

nonn,tabl

Author

Antti Karttunen, Jun 12 2002

Status

approved