442868domain: NAppears in sequencesa(n) = (5*3^(n-1)+1)/2.at n=11A057198a(1) = 1, then A007051 ((3^n)+1)/2 interleaved with A057198 (5*3^(n-1)+1)/2.at n=24A246360Row sums of A321624.at n=12A321573