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

A334037

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

Terms

    a(0) =1a(1) =133a(2) =560a(3) =1729a(4) =4160a(5) =10640a(6) =14560a(7) =22400a(8) =44800a(9) =58240a(10) =138320a(11) =98560a(12) =123200a(13) =203840a(14) =246400a(15) =394240a(16) =320320a(17) =492800a(18) =800800a(19) =640640a(20) =1047200a(21) =1823360a(22) =1724800a(23) =1281280a(24) =2094400a(25) =1601600a(26) =2475200a(27) =2722720a(28) =4484480a(29) =3203200

External references