Semiprimes sp such that sp plus its digit sum is a perfect square.

Terms

a(0) =38a(1) =86a(2) =161a(3) =614a(4) =662a(5) =998a(6) =1145a(7) =1355a(8) =1829a(9) =2189a(10) =2483a(11) =4607a(12) =5027a(13) =5315a(14) =6377a(15) =7199a(16) =8258a(17) =11435a(18) =13214a(19) =15611a(20) =17933a(21) =19574a(22) =20153a(23) =21305a(24) =21878a(25) =24014a(26) =26867a(27) =30599a(28) =32738a(29) =34199