a(n) is the position of A050614(n) in A062877.

Terms

a(0) =1a(1) =3a(2) =6a(3) =15a(4) =24a(5) =60a(6) =102a(7) =255a(8) =384a(9) =960a(10) =1632a(11) =4080a(12) =6168a(13) =15420a(14) =26214a(15) =65535a(16) =98304a(17) =245760a(18) =417792a(19) =1044480a(20) =1579008a(21) =3947520a(22) =6710784a(23) =16776960a(24) =25166208a(25) =62915520a(26) =106956384a(27) =267390960a(28) =404232216a(29) =1010580540