Dear Seqfans, back in 1987 someone from the Astrophysical Journal sent me three sequences whose explanation was not known to her. One of them turns out to be a serious sequence, A007468, so perhaps the other two are also. Can anyone identify them? Neil (a) 0,9,23,30,35,49,58,73,94 (b) (Equals A007468) (c) 2,8,2,3,4,9,4,5,9,8