A048434 Smallest denominator of fraction using palindromes that approximates 'phi' to at least n digits after the decimal point.

3, 131, 131, 343, 48384, 578875, 2686862, 161656161, 344363443, 13666666631, 22113131122, 1596916196951, 3256487846523, 115345262543511, 414720808027414, 15801167176110851, 39249297679294293, 988331239932133889, 988331239932133889

Offset

1,1

Links

Table of n, a(n) for n=1..19.

Example

n=10: 22113131122/13666666631 = 1.6180339887... which is correct to ten digits after the decimal point.

Crossrefs

Numerators in A048433.

Cf. A001622 (phi).

Sequence in context: A003370 A156957 A202030 * A249379 A139943 A005175

Adjacent sequences: A048431 A048432 A048433 * A048435 A048436 A048437

Keyword

nonn,frac,base,more

Author

Patrick De Geest, Apr 15 1999

Extensions

a(1) corrected and a(14)-a(19) from Sean A. Irvine, Jun 17 2021

Status

approved