Row 3 of array in A212801.

Terms

a(0) =1a(1) =13a(2) =108a(3) =793a(4) =5611a(5) =39312a(6) =274933a(7) =1923025a(8) =13455396a(9) =94169413a(10) =659134543a(11) =4613813568a(12) =32296413241a(13) =226074381637