a(n) is the first number k with A340967(k) = n.

Terms

a(0) =1a(1) =2a(2) =8a(3) =12a(4) =14a(5) =54a(6) =158a(7) =159a(8) =203a(9) =2159a(10) =5999a(11) =8339a(12) =143098a(13) =85679a(14) =724919a(15) =2417594a(16) =7415099a(17) =44026799a(18) =183578399a(19) =446036579