A192715 - cp's OEIS frontend

A192715 Number of 14X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2n^2 (number of collections of 14 zero-sum 2-vectors with total modulus squared not more than 2n^2, ignoring vector and component permutations).

n	a(n)
1	2
2	6
3	19
4	56
5	146
6	350
7	790
8	1685
9	3421
10	6680
11	12575
12	22923
13	40636
14	70228
15	118550
16	196038
17	317911
18	506487
19	793842
20	1225546
21	1865180
22	2802329
23	4157823
24	6098617
25	8848923
26	12709523
27	18076665
28	25480353
29	35605456
30	49349547
31	67866426
32	92643950

[2, 6, 19, 56, 146, 350, 790, 1685, 3421, 6680, 12575, 22923, 40636, 70228, 118550, 196038, 317911, 506487, 793842, 1225546, 1865180, 2802329, 4157823, 6098617, 8848923, 12709523, 18076665, 25480353, 35605456, 49349547, 67866426, 92643950]

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Table of values

List of values