a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.

A334035

a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.

Terms

    a(0) =1a(1) =45a(2) =225a(3) =585a(4) =2415a(5) =4725a(6) =9945a(7) =10395a(8) =31185a(9) =28665a(10) =45045a(11) =58905a(12) =143325a(13) =257985a(14) =135135a(15) =225225a(16) =329175a(17) =487305a(18) =405405a(19) =831285a(20) =1091475a(21) =675675a(22) =1396395a(23) =1576575a(24) =2927925a(25) =3132675a(26) =2436525a(27) =2027025a(28) =2567565a(29) =2297295

External references