A087343 Smallest k such that the concatenation of the n numbers k, k-1, k-2, k-3,... k-n+1 (the concatenation of n successive numbers in descending order) is divisible by n, or 0 if no such number exists.

1, 3, 3, 5, 9, 7, 22, 9, 9, 19, 20, 13, 19, 29, 19, 27, 28, 19, 19, 39, 23, 31, 33, 25, 49, 57, 27, 43, 46, 39, 57, 43, 42, 45, 64, 37, 77, 81, 46, 59, 41, 51, 53, 55, 49, 79, 66, 59, 99, 99, 62, 83, 68, 55, 64, 99, 81, 75, 90, 79, 106, 109, 65, 75, 139, 75, 154, 79, 79, 99