A071059 - cp's OEIS frontend

A071059 Number of ways of pairing even numbers in the range 1 to n with odd numbers in the range n+1 to 2n such that each pair sums to a prime.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	6
9	4
10	7
11	6
12	11
13	11
14	53
15	53
16	181
17	171
18	939
19	925
20	4432
21	4545
22	15811
23	15583
24	67891
25	68193
26	434963
27	388975
28	2718150
29	3113343
30	21580655
31	18425145
32	92370364
33	94887088
34	564878656
35	572364768
36	4545704064
37	4092294083
38	36878092180
39	36363930614

[1, 1, 1, 1, 1, 2, 2, 6, 4, 7, 6, 11, 11, 53, 53, 181, 171, 939, 925, 4432, 4545, 15811, 15583, 67891, 68193, 434963, 388975, 2718150, 3113343, 21580655, 18425145, 92370364, 94887088, 564878656, 572364768, 4545704064, 4092294083, 36878092180, 36363930614]

cp's OEIS Frontend

A071059 Number of ways of pairing even numbers in the range 1 to n with odd numbers in the range n+1 to 2n such that each pair sums to a prime.

Table of values

List of values