OFFSET
1,1
COMMENTS
Primes of this form are at A230041.
LINKS
K. D. Bajpai, Table of n, a(n) for n = 1..169
EXAMPLE
a(6) = 35 = 5 * 7, which is semiprime. Product of its digits = 3 * 5 = 15.
a(7) = 38 = 2 * 19, which is semiprime. Product of its digits = 3 * 8 = 24.
Since 24 > 15, 35 and 38 appear in the sequence.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,base
AUTHOR
K. D. Bajpai, Aug 30 2014
STATUS
approved