A011551 Decimal expansion of phi truncated to n places.

1, 16, 161, 1618, 16180, 161803, 1618033, 16180339, 161803398, 1618033988, 16180339887, 161803398874, 1618033988749, 16180339887498, 161803398874989, 1618033988749894, 16180339887498948, 161803398874989484, 1618033988749894848, 16180339887498948482

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..200

Crossrefs

Cf. A001622 (phi), A138116 (triangle of digits), A195607 (fraction), A276198 (next prime).

Palindromes: A135699, A135700.

Programs

Mathematica

With[{phi=RealDigits[GoldenRatio,10,50][[1]]},Table[FromDigits[ Take[ phi,n]],{n,20}]] (* Harvey P. Dale, Feb 03 2012 *)

PARI

my(phi=quadgen(5)); a(n) = floor(phi*10^n); \\ Kevin Ryde, Jun 05 2021