A044878 Numbers having, in base 7, (sum of even run lengths)=(sum of odd run lengths).
344, 345, 346, 347, 348, 349, 351, 359, 367, 375, 383, 391, 393, 394, 395, 396, 397, 398, 406, 407, 409, 410, 411, 412, 413, 414, 415, 417, 418, 419, 420, 421, 422, 423, 425, 426, 427, 428, 429, 430, 431, 433, 434, 435, 436
Offset: 1