In lunar arithmetic in base 2, the number of divisors of the number 11...1101 (n digits, the binary expansion of 2^n-3).
A188288
In lunar arithmetic in base 2, the number of divisors of the number 11...1101 (n digits, the binary expansion of 2^n-3).
Terms
- a(0) =0a(1) =1a(2) =0a(3) =2a(4) =2a(5) =2a(6) =4a(7) =6a(8) =10a(9) =16a(10) =31a(11) =55a(12) =100a(13) =185a(14) =345a(15) =644a(16) =1209a(17) =2274a(18) =4298a(19) =8145a(20) =15469a(21) =29454a(22) =56213a(23) =107489a(24) =205925a(25) =395190a(26) =759621a(27) =1462282a(28) =2818799a(29) =5440705
External references
- oeis: A188288