A077764 - cp's OEIS frontend

A077764 Number of ways of pairing the even squares of the numbers 1 to n with the odd squares of the numbers n+1 to 2n such that each pair sums to a prime. a(1) is defined to be 1.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	4
11	4
12	8
13	6
14	14
15	14
16	44
17	22
18	30
19	12
20	41
21	137
22	667
23	401
24	517
25	149
26	286
27	306
28	1312
29	1940
30	23546
31	23886
32	23886
33	68285
34	728501
35	241424
36	555302
37	630441
38	4175810
39	7996830
40	87591010
41	101316606
42	148078428
43	92744140
44	298180464
45	241949668
46	1090944470

[1, 1, 1, 1, 1, 1, 1, 1, 2, 4, 4, 8, 6, 14, 14, 44, 22, 30, 12, 41, 137, 667, 401, 517, 149, 286, 306, 1312, 1940, 23546, 23886, 23886, 68285, 728501, 241424, 555302, 630441, 4175810, 7996830, 87591010, 101316606, 148078428, 92744140, 298180464, 241949668, 1090944470]

cp's OEIS Frontend

A077764 Number of ways of pairing the even squares of the numbers 1 to n with the odd squares of the numbers n+1 to 2n such that each pair sums to a prime. a(1) is defined to be 1.

Table of values

List of values