A020961 a(n) = Sum_{k >= 1} floor(n*phi^(3-k)).

4, 11, 16, 23, 31, 36, 44, 49, 57, 64, 69, 77, 85, 91, 98, 103, 111, 119, 124, 131, 137, 145, 153, 158, 165, 173, 178, 186, 191, 200, 207, 212, 219, 228, 234, 242, 247, 254, 262, 267, 274, 280, 288, 295, 301, 308, 317, 323, 330, 335, 343, 350

Offset

1,1

Links

Table of n, a(n) for n=1..52.

C. Kimberling, Problem 10520, Amer. Math. Mon. 103 (1996) p. 347.

Crossrefs

Cf. A001622 (phi), A020960.

Sequence in context: A310559 A310560 A156244 * A336983 A005224 A054870

Adjacent sequences: A020958 A020959 A020960 * A020962 A020963 A020964

Keyword

nonn

Author

Clark Kimberling

Extensions

Title improved and more terms from Sean A. Irvine, May 05 2019

Status

approved