A025121 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A000201 (lower Wythoff sequence), t = A014306.

1, 1, 3, 1, 4, 8, 14, 14, 21, 19, 27, 25, 34, 33, 43, 42, 54, 68, 83, 81, 97, 95, 112, 111, 130, 129, 149, 147, 170, 168, 191, 190, 215, 213, 238, 235, 262, 290, 321, 319, 351, 349, 382, 381, 416, 414, 451, 449, 488, 486, 526, 525, 566, 565, 607, 603, 647, 643, 687, 685, 731

Offset

1,3

Links

Table of n, a(n) for n=1..61.

Crossrefs

Sequence in context: A245672 A303029 A050059 * A025097 A122115 A049916

Adjacent sequences: A025118 A025119 A025120 * A025122 A025123 A025124

Keyword

nonn

Author

Clark Kimberling

Status

approved