Numbers such that none of their prime factors share common 1-bits in the same bit-position and when added (or "ored" or "xored") together, yield a term of A000225 (a binary "repunit").
A235490
Numbers such that none of their prime factors share common 1-bits in the same bit-position and when added (or "ored" or "xored") together, yield a term of A000225 (a binary "repunit").
Terms
- a(0) =1a(1) =3a(2) =7a(3) =10a(4) =26a(5) =31a(6) =58a(7) =122a(8) =127a(9) =1018a(10) =2042a(11) =8186a(12) =8191a(13) =32762a(14) =131071a(15) =524287a(16) =2097146a(17) =8388602a(18) =33554426a(19) =1073741818a(20) =2147483647
External references
- oeis: A235490