A054310 Positions of 4's in the decimal expansion of Euler's constant.

9, 31, 34, 38, 63, 66, 78, 86, 95, 98, 102, 106, 107, 110, 118, 126, 129, 130, 134, 141, 149, 150, 167, 182, 194, 198, 212, 252, 257, 266, 276, 281, 285, 291, 295, 321, 328, 336, 341, 357, 360, 373, 409, 438, 445