Continue the Sequences

  1. 12, 13, 15, 17, 21, 23, 27
    (successive prime numbers plus 10)
  2. 9, 10, 14, 30, 94, 350, 1374
    (add successive powers of 4, or multiply by 4 then subtract 26)
  3. 1863, 1864, 1865, 1867, 1869, 1870, 1872
    (successive numbers with no repeated digits)
  4. 17, 23, 5, 18, 20, 25, 21
    (order of letters on standard QWERTY keyboard – Q=17, W=23, etc.)