cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A359457 Continued fraction for constant A359456.

Original entry on oeis.org

0, 9, 11, 99, 1, 10, 9, 999999999999999999, 1, 8, 10, 1, 99, 11, 9
Offset: 0

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Author

A.H.M. Smeets, Jan 02 2023

Keywords

Comments

It seems that all terms smaller than 100 are identical to the continued fraction terms of Liouville's constant as in A058304.
Except for the first term, the only values that occur in this sequence are 1,8,9,10,11,and values 10^A359458(m-1)-1 for m > 1. The probability of occurrence P(a(n) = k) are given by:
P(a(n) = 1) = 1/4,
P(a(n) = 8) = 1/8,
P(a(n) = 9) = 1/8,
P(a(n) = 10) = 1/8,
P(a(n) = 11) = 1/8 and
P(a(n) = 10^A359458(m-1)-1) = 2^-(m+1) for m > 1.

Crossrefs

Formula

a(n) = 1 if and only if n in A317331,
a(n) = 8 if and only if n in A317332,
a(n) = 9 if and only if n in A317333,
a(n) = 10 if and only if n = 8*m - 6 + 3*(m mod 2) for m > 0,
a(n) = 11 if and only if n = 8*m - 3 - 3*(m mod 2) for m > 0,
a(n) = 10^A359458(m-1)-1 if and only if n in {2^m*(1+k*4) - 1 | k >= 0} union {2^m*(3+k*4) | k >= 0} for m > 1.