Numbers for which the sum of reciprocals of square of digits is an integer.

Terms

a(0) =1a(1) =11a(2) =111a(3) =1111a(4) =2222a(5) =11111a(6) =12222a(7) =21222a(8) =22122a(9) =22212a(10) =22221a(11) =111111a(12) =112222a(13) =121222a(14) =122122a(15) =122212a(16) =122221a(17) =211222a(18) =212122a(19) =212212a(20) =212221a(21) =221122a(22) =221212a(23) =221221a(24) =222112a(25) =222121a(26) =222211a(27) =222336a(28) =222363a(29) =222633