A179807 Antidiagonal sums of A175105.

1, 1, 2, 3, 5, 9, 17, 34, 71, 153, 337, 755, 1713, 3925, 9064, 21065, 49213, 115477, 271961, 642495, 1521899, 3613189, 8595037, 20480600, 48874131, 116781789, 279358063, 668925263, 1603145325, 3845056065, 9228442541, 22162387821

Offset

1,3

Comments

The ratio a(n+1)/a(n) tends to 1 + sqrt(2), A014176.

Links

Table of n, a(n) for n=1..32.

Crossrefs

Cf. A175105, A002193.

Sequence in context: A295637 A061902 A166286 * A110113 A341960 A137155

Adjacent sequences: A179804 A179805 A179806 * A179808 A179809 A179810

Keyword

nonn

Author

Mats Granvik, Jul 28 2010

Status

approved