Numbers k for which sigma(k) >= 2*k and (sigma(k) - 2*k) AND k = k, where AND is bitwise-and, A004198.
A388026
Numbers k for which sigma(k) >= 2*k and (sigma(k) - 2*k) AND k = k, where AND is bitwise-and, A004198.
Terms
- a(0) =120a(1) =672a(2) =720a(3) =900a(4) =1344a(5) =1440a(6) =2352a(7) =2688a(8) =3528a(9) =4680a(10) =5280a(11) =5376a(12) =5616a(13) =6336a(14) =7488a(15) =10752a(16) =16416a(17) =17100a(18) =17472a(19) =21504a(20) =21888a(21) =24600a(22) =26496a(23) =27144a(24) =32832a(25) =33120a(26) =33300a(27) =34848a(28) =35520a(29) =36504
External references
- oeis: A388026