Images of hexamorphic numbers: suppose k-th hexagonal number H(k) (A000384) ends in k; sequence gives positive values of H(k).

A038494

Images of hexamorphic numbers: suppose k-th hexagonal number H(k) (A000384) ends in k; sequence gives positive values of H(k).

Terms

    a(0) =1a(1) =45a(2) =66a(3) =1225a(4) =1326a(5) =4950a(6) =5151a(7) =11175a(8) =11476a(9) =31125a(10) =282376a(11) =499500a(12) =501501a(13) =780625a(14) =1533876a(15) =38294376a(16) =49995000a(17) =50015001a(18) =63275625a(19) =175809376a(20) =3300740625a(21) =4999950000a(22) =5000150001a(23) =7050959376a(24) =16425690625a(25) =23926109376

External references