A054307 Positions of 1's in the decimal expansion of Euler's constant.

5, 12, 23, 36, 40, 93, 101, 105, 128, 142, 200, 214, 226, 228, 233, 234, 240, 241, 246, 273, 280, 297, 299, 315, 323, 332, 337, 343, 344, 345, 349, 375, 384, 399, 406, 423, 426, 433, 442, 453, 457, 461, 468, 477