Square pyramorphic numbers: suppose the k-th square pyramidal number S(k) (A000330) ends in k; sequence gives value of S(k).

A060204

Square pyramorphic numbers: suppose the k-th square pyramidal number S(k) (A000330) ends in k; sequence gives value of S(k).

Terms

    a(0) =1a(1) =55a(2) =5525a(3) =22140a(4) =93665a(5) =173880a(6) =1378160a(7) =3822225a(8) =19096385a(9) =21413400a(10) =58695560a(11) =81575625a(12) =161553785a(13) =170986800a(14) =295372960a(15) =555371185a(16) =5595682560a(17) =6032742625a(18) =21341334000a(19) =46478345185a(20) =94121656560a(21) =96947076625

External references