Distinct values of A343511.

Terms

a(0) =1a(1) =2a(2) =6a(3) =10a(4) =42a(5) =146a(6) =314a(7) =1806a(8) =23226a(9) =42814a(10) =141578a(11) =395002a(12) =3263442a(13) =542731938a(14) =2372530250a(15) =21123367578a(16) =41921883010a(17) =216160029242a(18) =780133887002