The differences 1-1, 21-12, 321-123, ..., 10987654321-12345678910, 1110987654321-1234567891011, etc.

A019566

The differences 1-1, 21-12, 321-123, ..., 10987654321-12345678910, 1110987654321-1234567891011, etc.

Terms

    a(0) =0a(1) =9a(2) =198a(3) =3087a(4) =41976a(5) =530865a(6) =6419754a(7) =75308643a(8) =864197532a(9) =-1358024589a(10) =-123580236690

External references