A023958 n-th digit in the decimal expansion of the n-th root of n.

1, 4, 4, 4, 7, 0, 9, 5, 0, 1, 9, 7, 0, 4, 3, 1, 7, 2, 4, 8, 9, 4, 4, 2, 3, 3, 0, 0, 5, 0, 8, 6, 0, 7, 9, 1, 4, 7, 7, 5, 6, 0, 3, 8, 4, 6, 5, 9, 4, 7, 0, 8, 8, 6, 4, 5, 4, 8, 0, 1, 9, 7, 9, 3, 4, 7, 0, 7, 5, 7, 6, 6, 4, 5, 2, 0, 2, 0, 2, 8, 6, 4, 7, 2, 9, 7, 5, 9, 2, 1, 0, 5, 0, 4, 0, 5, 3, 0, 9, 6, 9, 5