A082543 Take a string of n x's and insert n-1 ^'s and n-1 pairs of parentheses in all possible ways. Sequence gives number of distinct integer values when x=sqrt(2).

0, 0, 1, 1, 2, 2, 3, 4, 5, 7

Offset

1,5

Comments

It appears that the integer values obtained are always of form 2^(2^k).

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A003019, A082499.

Sequence in context: A036072 A045475 A316078 * A050322 A325512 A211858

Adjacent sequences: A082540 A082541 A082542 * A082544 A082545 A082546

Keyword

nonn,more

Author

Benoit Cloitre, May 02 2003

Extensions

More terms and comments from W. Edwin Clark, May 02 2003

Status

approved