Numbers whose smallest expression as a sum of positive cubes requires exactly 7 cubes.

Terms

a(0) =7a(1) =14a(2) =21a(3) =42a(4) =47a(5) =49a(6) =61a(7) =77a(8) =85a(9) =87a(10) =103a(11) =106a(12) =111a(13) =112a(14) =113a(15) =122a(16) =140a(17) =148a(18) =159a(19) =166a(20) =174a(21) =178a(22) =185a(23) =204a(24) =211a(25) =223a(26) =229a(27) =230a(28) =237a(29) =276