A080329 Larger of the two Ulam numbers that sum to the n-th Ulam number.

0, 0, 2, 3, 4, 6, 8, 11, 13, 16, 18, 26, 28, 36, 36, 47, 47, 53, 36, 53, 69, 69, 69, 69, 69, 97, 99, 102, 106, 69, 69, 102, 97, 145, 102, 106, 175, 177, 180, 102, 189, 180, 206, 206, 219, 189, 236, 238, 241, 206, 189, 258, 260, 180, 273, 219, 316, 316, 282, 339

Offset

1,3

Comments

The first two are zero because the Ulam sequence (A002858) is initialized for those terms. The smaller term in the sum is in A080328 and the indices are in A080330 and A080331.

Links

T. D. Noe, Table of n, a(n) for n=1..10000

Example

The 11th Ulam number (26) is the sum of the 6th Ulam number (8) and the 10th Ulam number (18), so a(11)=18.

Crossrefs

Cf. A002858, A080328, A080330, A080331.

Sequence in context: A018362 A033056 A060469 * A002858 A211522 A368482

Adjacent sequences: A080326 A080327 A080328 * A080330 A080331 A080332

Keyword

nonn

Author

Jud McCranie, Feb 15 2003

Status

approved