Consider the triangle shown below; sequence contains the concatenation of numbers read at a 45-degree angle upwards with horizontal beginning with the first term of a row.

A079826

Consider the triangle shown below; sequence contains the concatenation of numbers read at a 45-degree angle upwards with horizontal beginning with the first term of a row.

Terms

    a(0) =1a(1) =3a(2) =42a(3) =105a(4) =1196a(5) =21128a(6) =2220137a(7) =36231914a(8) =3735241815a(9) =5538342517a(10) =565439332616a(11) =785753403227

External references