Seventh column of triangle A115193 (called C(1,2)).

A115204

Seventh column of triangle A115193 (called C(1,2)).

Terms

    a(0) =1a(1) =13a(2) =123a(3) =1037a(4) =8291a(5) =64509a(6) =494595a(7) =3761661a(8) =28486659a(9) =215277565a(10) =1625688067a(11) =12277764093a(12) =92783468547a(13) =701828038653

External references