A q-factorial type triangle sequence: t(n,m)=Product[Sum[(m + 1)^i, {i, 0, k - 1}], {k, 1, n}].

A156173

A q-factorial type triangle sequence: t(n,m)=Product[Sum[(m + 1)^i, {i, 0, k - 1}], {k, 1, n}].

Terms

    a(0) =1a(1) =3a(2) =4a(3) =21a(4) =52a(5) =105a(6) =315a(7) =2080a(8) =8925a(9) =29016a(10) =9765a(11) =251680a(12) =3043425a(13) =22661496a(14) =121226245a(15) =615195a(16) =91611520a(17) =4154275125a(18) =88515803376a(21) =78129765a(22) =100131391360

External references