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A054290
Positions of 4's in the decimal expansion of (1+sqrt(5))/2.
1
12, 16, 18, 22, 28, 59, 60, 71, 80, 81, 91, 101, 103, 106, 157, 158, 234, 243, 256, 257, 261, 273, 283, 284, 286, 288, 291, 301, 304, 305, 306, 309, 312, 313, 321, 322, 324, 327, 333, 343, 347, 348, 354, 355, 362
OFFSET
1,1
LINKS
MATHEMATICA
Flatten[Position[RealDigits[GoldenRatio, 10, 500][[1]], 4]] (* G. C. Greubel, Jul 31 2019 *)
CROSSREFS
Cf. A001622.
Sequence in context: A378082 A064499 A080258 * A107308 A051518 A043544
KEYWORD
nonn,base
AUTHOR
Simon Plouffe, Feb 20 2000
STATUS
approved