A025522 Least k>1 such that reverse complement of first n terms of A022303 repeats beginning at k-th term.

2, 3, 2, 19, 18, 17, 16, 24, 23, 22, 21, 20, 58, 57, 341, 340, 339, 338, 337, 336, 335, 334, 333, 332, 331, 330, 329, 328, 327, 326, 325, 324, 323, 322, 649, 648, 647, 646, 645, 863, 862, 861, 860, 859, 858, 857, 856, 855, 854, 853, 852, 851, 850, 849, 848, 847, 846, 845