Numbers starting with 1 such that the sum of any two distinct elements has an odd number of distinct prime factors.

A180615

Numbers starting with 1 such that the sum of any two distinct elements has an odd number of distinct prime factors.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =58a(5) =124a(6) =254a(7) =309a(8) =519a(9) =1029a(10) =1179a(11) =1569a(12) =1986a(13) =3795a(14) =10008a(15) =31133a(16) =39260a(17) =76772a(18) =126798a(19) =190293a(20) =613553a(21) =873413a(22) =1324947a(23) =16893137a(24) =23186977a(25) =65348522a(26) =91513433a(27) =168375480a(28) =836588442a(29) =844570409

External references