A089689 A nonsense sequence.

3, 7, 311, 313, 317, 9733, 9739, 10973, 10979, 31097317, 73109731091, 97310973101, 97310973103, 97310973109733, 7310973109731091, 73109731097310973109731097, 97310973109731097310973101

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Mathematica

a={1, 3, 7, 9};
a1={0, 1, 3, 7, 9};
digits=17;
b=Flatten[Table[10*Sum[10^m*a1[[1+Mod[n+m, 5]]], {m, 0, n}]+a, {n, 0, digits}]];
c=Table[If[PrimeQ[b[[n]]]==True, b[[n]], 0], {n, 1, Dimensions[b][[1]]}];
d=Delete[Union[c], 1]

Crossrefs

Sequence in context: A088097 A064774 A348376 * A248701 A103317 A104051

Adjacent sequences: A089686 A089687 A089688 * A089690 A089691 A089692

Keyword

nonn,base,less,uned

Author

Roger L. Bagula, Jan 05 2004

Status

approved