Largest m such that A034258(m) <= n.

Terms

a(0) =3a(1) =8a(2) =13a(3) =15a(4) =19a(5) =23a(6) =26a(7) =31a(8) =33a(9) =37a(10) =39a(11) =45a(12) =48a(13) =50a(14) =56a(15) =57a(16) =61a(17) =64a(18) =67a(19) =71a(20) =76a(21) =79a(22) =83a(23) =86a(24) =89a(25) =92a(26) =93a(27) =99a(28) =103a(29) =107