Column k=8 sequence of array A103728.

Terms

a(0) =41a(1) =457a(2) =12113a(3) =41455a(4) =305867a(5) =3000929a(6) =5664121a(7) =29442493a(8) =75028961a(9) =115285297a(10) =255381053a(11) =738339317a(12) =1884309221a(13) =2516676241a(14) =5657847163a(15) =9307388231a(16) =11805057217a(17) =23150085349a(18) =35212054847a(19) =63554702993a(20) =131233995553