A031119 Position of n-th 7 in A031111.
11, 18, 21, 26, 28, 63, 65, 103, 109, 125, 127, 147, 165, 176, 187, 215, 218, 244, 248, 249, 251, 288, 291, 296, 305, 319, 346, 353, 355, 361, 366, 370, 373, 390, 406, 411, 412, 417, 428, 443, 450, 456, 467, 470, 477, 489, 503
Offset: 1