OFFSET
1,1
COMMENTS
In other words, these are the numbers with a prime prefix.
For any m > 0:
- let f(m) be the proportion of positive numbers <= 10^m belonging to this sequence,
- also f(m) <= f(m+1) <= 1,
- so {f(m)} has a limit, say F, as m tends to infinity,
- what is the value of F?
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
EXAMPLE
The number 2 is prime, so every number in A217394 belongs to this sequence.
PROG
(PARI) is(n, base=10) = while (n, if (isprime(n), return (1), n\=base)); return (0)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jan 08 2020
STATUS
approved