Antidiagonal sums of square table A086623.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =12a(5) =26a(6) =59a(7) =138a(8) =332a(9) =814a(10) =2028a(11) =5118a(12) =13054a(13) =33598a(14) =87143a(15) =227542a(16) =597640a(17) =1577866a(18) =4185108a(19) =11146570a(20) =29798682a(21) =79932298a(22) =215072896a(23) =580327122a(24) =1569942098a(25) =4257254850a(26) =11569980794a(27) =31508150890a(28) =85968266198a(29) =234975421554