|
| |
|
|
A154779
|
|
Number of terms with n digits in A154780.
|
|
1
| |
|
|
1, 1, 2, 2, 4, 6, 12, 17, 34, 55, 98, 161, 288, 448, 811, 1265, 2145, 3425, 5860, 9305, 15384, 24690, 40445, 64715
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,3
|
|
|
COMMENTS
| Does the ratio of consecutive terms, a(n+1)/a(n), tend to a finite limit?
|
|
|
PROG
| (PARI) print1("1, ", #last=[35]); for(d=3, 30, new=[]; forprime( p=0, 9, for(k=1, #last, isprime((last[k]^2\10^d+t*last[k]/5)%10) & new=concat(new, last[k]+p*10^(d-1)))); print1(", ", #last=new))
|
|
|
CROSSREFS
| Sequence in context: A115868 A103299 A195204 * A010101 A129860 A028408
Adjacent sequences: A154776 A154777 A154778 * A154780 A154781 A154782
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| M. F. Hasler (www.univ-ag.fr/~mhasler), Jan 24 2009
|
| |
|
|
