A112828 a(n) is the decimal period of the fractional part of BernoulliB[2n].

0, 1, 1, 6, 1, 2, 6, 1, 16, 18, 2, 22, 6, 1, 28, 30, 16, 1, 18, 1, 10, 42, 22, 46, 48, 2, 13, 18, 28, 58, 60, 1, 16, 66, 1, 70, 72, 1, 1, 78, 80, 41, 84, 1, 44, 90, 46, 1, 96, 1, 4, 102, 13, 53, 108, 22, 112, 6, 58, 1, 60, 1, 1, 126, 16, 130, 66, 1, 8, 138, 140, 1, 144, 1, 148