A080074 a(n) = round(126*phi^n).

0, 1, 1, 2, 3, 4, 7, 11, 18, 30, 48, 78, 126, 204, 330, 534, 864, 1397, 2261, 3658, 5919, 9578, 15497, 25075, 40572, 65646, 106218, 171864, 278082, 449946, 728028, 1177974, 1906002, 3083976, 4989978, 8073954, 13063932, 21137886, 34201818, 55339704, 89541522, 144881226

Offset

-12,4

Comments

Related to Le Corbusier's "modular" (or "modulor") numbers, see A080104.

Links

Vincenzo Librandi, Table of n, a(n) for n = -12..1100

Example

G.f. = x^-11 + x^-10 + 2*x^-9 + 3*x^-8 + 4*x^-7 + 7*x^-6 + 11*x^-5 + ...
a(0) = 126.

Maple

A080074:=n->round(126*((1+sqrt(5))/2)^n): seq(A080074(n), n=-12..50); # Wesley Ivan Hurt, Jan 19 2017

Mathematica

Table[Round[126 GoldenRatio^n], {n, -12, 29}] (* Michael De Vlieger, Jan 20 2017 *)

Prog

(Magma) [Round(126*((1+Sqrt(5))/2)^n): n in [-12..50]]; // Vincenzo Librandi, Jan 21 2017

Crossrefs

Cf. A080104.

Sequence in context: A169985 A254729 A293544 * A317767 A018064 A226161

Adjacent sequences: A080071 A080072 A080073 * A080075 A080076 A080077

Keyword

nonn,easy

Author

N. J. A. Sloane, Mar 15 2003

Status

approved