|
| |
|
|
A089691
|
|
a={1,3,7,9} a1={1,3,7,9,0} b[n]=Flatten[Table[10*Sum[10^m*a1[[1+Mod[m,5]]],{m,0,n}]+a,{n,0,digits}]]; a(m) = if b[n] is prime then b[n]
|
|
0
| |
|
|
11, 13, 17, 19, 311, 313, 317, 31097317, 731097313, 109731097319, 73109731097317, 7310973109731097319, 10973109731097310973109731097310973109731097317, 31097310973109731097310973109731097310973109731097317
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| A sum and digit set based prime generator function.
|
|
|
MATHEMATICA
| a={1, 3, 7, 9} a1={1, 3, 7, 9, 0} digits=100 b=Flatten[Table[10*Sum[10^m*a1[[1+Mod[m, 5]]], {m, 0, n}]+a, {n, 0, digits}]]; d=Delete[Union[c], 1]
|
|
|
CROSSREFS
| Sequence in context: A032591 A088265 A090149 * A036979 A036977 A120168
Adjacent sequences: A089688 A089689 A089690 * A089692 A089693 A089694
|
|
|
KEYWORD
| nonn,base,less
|
|
|
AUTHOR
| Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jan 05 2004
|
| |
|
|
