a(n) = (2n + 1)*2^(2n + 1); numbers k such that v(k)*2^v(k) = k, where v(n) = A007814(n) is 2-adic valuation of n.
A288443
a(n) = (2n + 1)*2^(2n + 1); numbers k such that v(k)*2^v(k) = k, where v(n) = A007814(n) is 2-adic valuation of n.
Terms
- a(0) =2a(1) =24a(2) =160a(3) =896a(4) =4608a(5) =22528a(6) =106496a(7) =491520a(8) =2228224a(9) =9961472a(10) =44040192a(11) =192937984a(12) =838860800a(13) =3623878656a(14) =15569256448a(15) =66571993088a(16) =283467841536
External references
- oeis: A288443