Pentagonal numbers for which both the sum of the digits and the product of the digits are pentagonal numbers.

A117711

Pentagonal numbers for which both the sum of the digits and the product of the digits are pentagonal numbers.

Terms

    a(0) =0a(1) =1a(2) =5a(3) =6501a(4) =8400a(5) =10542a(6) =10795a(7) =18760a(8) =21540a(9) =32340a(10) =45850a(11) =50142a(12) =50692a(13) =55200a(14) =60501a(15) =72490a(16) =91390a(17) =104412a(18) =127750a(19) =160230a(20) =170185a(21) =179401a(22) =208507a(23) =239800a(24) =250717a(25) =272001a(26) =273280a(27) =333940a(28) =346801a(29) =400675

External references