Seventh column of triangle A055252.

Terms

a(0) =1a(1) =10a(2) =58a(3) =256a(4) =955a(5) =3178a(6) =9740a(7) =28064a(8) =77093a(9) =203930a(10) =523262a(11) =1309520a(12) =3209871a(13) =7731642a(14) =18348240a(15) =42989520a(16) =99612345a(17) =228586890a(18) =520090690a(19) =1174401760a(20) =2634019171a(21) =5872021450a(22) =13019115028a(23) =28722588736a(24) =63082326605