A346636 - cp's OEIS frontend

A346636 a(n) is the number of quadruples (a_1, a_2, a_3, a_4) having all terms in {1,...,n} such that there exists a quadrilateral with these side lengths.

n	a(n)
0	0
1	1
2	16
3	77
4	236
5	565
6	1156
7	2121
8	3592
9	5721
10	8680
11	12661
12	17876
13	24557
14	32956
15	43345
16	56016
17	71281
18	89472
19	110941
20	136060
21	165221
22	198836
23	237337
24	281176
25	330825
26	386776
27	449541
28	519652
29	597661
30	684140
31	779681
32	884896
33	1000417
34	1126896
35	1265005
36	1415436

[0, 1, 16, 77, 236, 565, 1156, 2121, 3592, 5721, 8680, 12661, 17876, 24557, 32956, 43345, 56016, 71281, 89472, 110941, 136060, 165221, 198836, 237337, 281176, 330825, 386776, 449541, 519652, 597661, 684140, 779681, 884896, 1000417, 1126896, 1265005, 1415436]

cp's OEIS Frontend

A346636 a(n) is the number of quadruples (a_1, a_2, a_3, a_4) having all terms in {1,...,n} such that there exists a quadrilateral with these side lengths.

Table of values

List of values