a(n) is the least k such that A322523(k) = n.

Terms

a(0) =1a(1) =3a(2) =8a(3) =17a(4) =44a(5) =125a(6) =368a(7) =1097a(8) =3284a(9) =9845a(10) =29528a(11) =88577a(12) =265724a(13) =797165a(14) =2391488a(15) =7174457a(16) =21523364a(17) =64570085a(18) =193710248a(19) =581130737a(20) =1743392204a(21) =5230176605a(22) =15690529808a(23) =47071589417a(24) =141214768244a(25) =423644304725