A054298 Positions of 2's in the decimal expansion of sqrt(2).

5, 10, 27, 29, 70, 76, 93, 100, 110, 115, 116, 120, 123, 137, 139, 144, 161, 162, 163, 168, 175, 190, 193, 218, 229, 234, 256, 258, 260, 273, 283, 288, 293, 305, 321, 327, 332, 337, 350, 360, 368, 369, 429, 440