A090922 Least multiple of n such that the n-th concatenation is a multiple of n+1.

2, 4, 12, 20, 10, 36, 56, 40, 90, 20, 88, 192, 182, 70, 240, 64, 170, 396, 380, 100, 168, 594, 552, 600, 350, 208, 108, 588, 870, 510, 496, 800, 462, 1190, 700, 144, 2146, 152, 1560, 760, 2624, 2730, 516, 1320, 180, 138, 2256, 3024, 2450, 1150, 1020, 1872, 636