OFFSET
1,1
LINKS
K. D. Bajpai, Table of n, a(n) for n = 1..1150
EXAMPLE
86 is in the sequence because 86 = 2* 43, which is semiprime. Also, 86 + (8 + 6) = 100 = 10^2.
614 is in the sequence because 614 = 2* 307, which is semiprime. Also, 614 + (6 + 1 + 4) = 625 = 25^2.
MATHEMATICA
Select[Range[50000], PrimeOmega[#] == 2 && IntegerQ[Sqrt[# + Apply[Plus, IntegerDigits[#]]]] &]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
K. D. Bajpai, Jul 12 2014
STATUS
approved