Number of distinct values of the sum of 5 products of three 0..n integers.

Terms

a(0) =6a(1) =36a(2) =117a(3) =269a(4) =534a(5) =910a(6) =1466a(7) =2180a(8) =3125a(9) =4298a(10) =5773a(11) =7469a(12) =9607a(13) =12010a(14) =14818a(15) =18033a(16) =21770a(17) =25863a(18) =30605a(19) =35694a(20) =41497a(21) =47791a(22) =54786a(23) =62214a(24) =70646a(25) =79612a(26) =89300a(27) =99767a(28) =111133a(29) =123000