Pentagonal pyramidal numbers which are the sum of two other such numbers: A002411(k) = A002411(i)+A002411(j) with i,j>0.

A172425

Pentagonal pyramidal numbers which are the sum of two other such numbers: A002411(k) = A002411(i)+A002411(j) with i,j>0.

Terms

    a(0) =37926a(1) =279046a(2) =2514726a(3) =34797726a(4) =71254566a(5) =348145726a(6) =566225926a(7) =606245926a(8) =828497488a(9) =1206646551a(10) =8750871976a(11) =11481404326a(12) =21078151200a(13) =28120290876a(14) =62963640936a(15) =75128827176a(16) =77009692800a(17) =96868002726a(18) =120282238710a(19) =147061923750a(20) =165998399400a(21) =297022824126a(22) =325443925926a(23) =416397477888

External references