A049196 Squarefree numbers whose Euler totient function is also squarefree.

1, 2, 3, 6, 7, 11, 14, 22, 23, 31, 43, 46, 47, 59, 62, 67, 71, 79, 83, 86, 94, 103, 107, 118, 131, 134, 139, 142, 158, 166, 167, 179, 191, 206, 211, 214, 223, 227, 239, 262, 263, 278, 283, 311, 331, 334, 347, 358, 359, 367, 382, 383, 419, 422, 431, 439, 443, 446