A054288 Positions of 2's in the decimal expansion of (1 + sqrt(5))/2.

20, 39, 52, 55, 63, 64, 68, 73, 79, 86, 89, 121, 123, 130, 131, 132, 153, 175, 183, 184, 192, 194, 197, 206, 214, 224, 229, 230, 231, 236, 239, 246, 248, 269, 270, 290, 308, 315, 349, 350, 352, 382, 389, 407, 410

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..1000

Mathematica

Flatten[Position[RealDigits[(Sqrt[5]+1)/2, 10, 1000][[1]], 2]] (* Harvey P. Dale, Oct 30 2014 *)

Crossrefs

Cf. A001622.

Sequence in context: A165442 A242532 A132606 * A238245 A215144 A352108

Adjacent sequences: A054285 A054286 A054287 * A054289 A054290 A054291

Keyword

nonn,base

Author

Simon Plouffe, Feb 20 2000

Status

approved