A083049 Antidiagonal sums of table A083047.

1, 5, 15, 34, 68, 127, 225, 387, 652, 1084, 1787, 2927, 4775, 7769, 12616, 20462, 33160, 53709, 86962, 140769, 227834, 368711, 596658, 965488, 1562270, 2527887, 4090292, 6618319, 10708756, 17327225, 28036136, 45363522, 73399824, 118763517

Offset

0,2

Links

Table of n, a(n) for n=0..33.

Formula

a(n) = Sum_{k=0..n} T(k, n-k), where T(n, 0) = floor(n*x/(x-1))+1, T(n, k+1) = ceiling(x*T(n, k)), for n>=0, k>=0, with x = (sqrt(5)+1)/2.

Crossrefs

Cf. A083044, A083047, A083050, A083048.

Sequence in context: A026101 A111385 A084288 * A015627 A156778 A346752

Adjacent sequences: A083046 A083047 A083048 * A083050 A083051 A083052

Keyword

nonn

Author

Paul D. Hanna, Apr 18 2003

Status

approved