Squares for which both the sum of the digits and the product of the digits is a triangular number.

Terms

a(0) =0a(1) =1a(2) =100a(3) =3025a(4) =5041a(5) =6400a(6) =10000a(7) =21025a(8) =23104a(9) =26569a(10) =32041a(11) =36100a(12) =38809a(13) =47089a(14) =63001a(15) =87616a(16) =88804a(17) =110224a(18) =122500a(19) =130321a(20) =157609a(21) =170569a(22) =178084a(23) =195364a(24) =199809a(25) =201601a(26) =203401a(27) =209764a(28) =211600a(29) =218089