A059871 - cp's OEIS frontend

A059871 Number of solutions to the equation p_i = (1+mod(i,2))*p_{i-1} +- p_{i-2} +- p_{i-3} +- ... +- 2 +- 1, where p_i is the i-th prime number (where p_1 = 2 and the "zeroth prime" p_0 is defined to be 1).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	3
7	3
8	4
9	6
10	12
11	16
12	31
13	46
14	90
15	140
16	276
17	449
18	877
19	1443
20	2834
21	4725
22	9395
23	16153
24	32037
25	55872
26	110288
27	190815
28	380488
29	672728
30	1342395
31	2434797
32	4808180
33	8579625
34	17070112
35	30858078
36	61271317
37	110926277
38	220979544
39	402354848

[1, 1, 1, 1, 1, 3, 3, 4, 6, 12, 16, 31, 46, 90, 140, 276, 449, 877, 1443, 2834, 4725, 9395, 16153, 32037, 55872, 110288, 190815, 380488, 672728, 1342395, 2434797, 4808180, 8579625, 17070112, 30858078, 61271317, 110926277, 220979544, 402354848]

cp's OEIS Frontend

A059871 Number of solutions to the equation p_i = (1+mod(i,2))*p_{i-1} +- p_{i-2} +- p_{i-3} +- ... +- 2 +- 1, where p_i is the i-th prime number (where p_1 = 2 and the "zeroth prime" p_0 is defined to be 1).

Table of values

List of values