Number of ones on each row of irregular tables A252743 and A252744.

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =6a(5) =15a(6) =26a(7) =57a(8) =118a(9) =237a(10) =486a(11) =989a(12) =1992a(13) =3997a(14) =8038a(15) =16133a(16) =32331a(17) =64777a(18) =129810a(19) =260191a(20) =521325a(21) =1043924a(22) =2089305a(23) =4180716