Square root of A030686.

Terms

a(0) =4a(1) =7a(2) =30a(3) =13a(4) =16a(5) =19a(6) =70a(7) =80a(8) =90a(9) =100a(10) =110a(11) =38a(12) =130a(13) =140a(14) =150a(15) =160a(16) =170a(17) =57a(18) =190a(19) =200a(20) =210a(21) =220a(22) =230a(23) =240a(24) =250a(25) =260a(26) =270a(27) =280a(28) =290a(29) =300