a(n) is the number of quintuples (a_1,a_2,a_3,a_4,a_5) having all terms in {1,...,n} such that there exists a pentagon with these side-lengths.

A346637

a(n) is the number of quintuples (a_1,a_2,a_3,a_4,a_5) having all terms in {1,...,n} such that there exists a pentagon with these side-lengths.

Terms

    a(0) =0a(1) =1a(2) =32a(3) =243a(4) =1019a(5) =3095a(6) =7671a(7) =16527a(8) =32138a(9) =57789a(10) =97690a(11) =157091a(12) =242397a(13) =361283a(14) =522809a(15) =737535a(16) =1017636a(17) =1377017a(18) =1831428a(19) =2398579a(20) =3098255a(21) =3952431a(22) =4985387a(23) =6223823a(24) =7696974a(25) =9436725a(26) =11477726a(27) =13857507a(28) =16616593a(29) =19798619

External references