A072708 Last digit of F(n) is 6 where F(n) is the n-th Fibonacci number.

21, 39, 42, 48, 81, 99, 102, 108, 141, 159, 162, 168, 201, 219, 222, 228, 261, 279, 282, 288, 321, 339, 342, 348, 381, 399, 402, 408, 441, 459, 462, 468, 501, 519, 522, 528, 561, 579, 582, 588, 621, 639, 642, 648, 681, 699, 702, 708, 741, 759, 762, 768, 801