OFFSET
1,1
COMMENTS
It is a result of application of Eratosthenes-like sieve to sequence of odd parts of sums of digits of n^2 which begins 1,1,9,7,7,9,13,5,... .
Conjecture: the sequence is a permutation of all primes > 3.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, May 09 2013
STATUS
approved