a(n) is the least k such that A342956(k) = n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =15a(4) =39a(5) =87a(6) =183a(7) =951a(8) =1255a(9) =1527a(10) =3063a(11) =15335a(12) =12279a(13) =61431a(14) =49143a(15) =516047a(16) =491495a(17) =1703767a(18) =1310695a(19) =8257487a(20) =3145719a(21) =15728631a(22) =12582903a(23) =94371815a(24) =50331639a(25) =352321527a(26) =335544295