Least k such that k-1 and k+1 in binary representation have same number n of 0's as 1's.
A191296
Least k such that k-1 and k+1 in binary representation have same number n of 0's as 1's.
Terms
- a(0) =11a(1) =36a(2) =140a(3) =540a(4) =2108a(5) =8316a(6) =33020a(7) =131580a(8) =525308a(9) =2099196a(10) =8392700a(11) =33562620a(12) =134234108a(13) =536903676a(14) =2147549180a(15) =8590065660a(16) =34360000508a(17) =137439477756a(18) =549756862460
External references
- oeis: A191296