A114942 a(n) is the largest base-4 string such that the n-th number coprime to 4 does not divide any substring of a(n).

22, 3232, 312311, 33233233, 3332113312, 332121111132, 23221212122321, 3332312213121123, 333333312213223231, 33121121231232213233, 3332312112213222213313, 333333332322313223212311

Offset

2,1

Links

Table of n, a(n) for n=2..13.

Example

a(3) = 3232 (base 4) because the 3rd number coprime to 4 is 5, and 5 does not divide any substring of a(3).

Crossrefs

Sequence in context: A078275 A200805 A128854 * A155885 A362901 A218719

Adjacent sequences: A114939 A114940 A114941 * A114943 A114944 A114945

Keyword

nonn,base

Author

Don Reble, Feb 20 2006

Status

approved