A087427 - cp's OEIS frontend

A087427 Number of lattice points on or inside the rectangle formed by [1 <= x <= (q-1)/2] and [1 <= y <= (p-1)/2], where p = n-th prime, q = (n-1)-st prime.

n	a(n)
3	2
4	6
5	15
6	30
7	48
8	72
9	99
10	154
11	210
12	270
13	360
14	420
15	483
16	598
17	754
18	870
19	990
20	1155
21	1260
22	1404
23	1599
24	1804
25	2112
26	2400
27	2550
28	2703
29	2862
30	3024
31	3528
32	4095
33	4420
34	4692
35	5106
36	5550
37	5850
38	6318
39	6723
40	7138
41	7654
42	8010
43	8550
44	9120
45	9408
46	9702
47	10395
48	11655

[2, 6, 15, 30, 48, 72, 99, 154, 210, 270, 360, 420, 483, 598, 754, 870, 990, 1155, 1260, 1404, 1599, 1804, 2112, 2400, 2550, 2703, 2862, 3024, 3528, 4095, 4420, 4692, 5106, 5550, 5850, 6318, 6723, 7138, 7654, 8010, 8550, 9120, 9408, 9702, 10395, 11655]

cp's OEIS Frontend

A087427 Number of lattice points on or inside the rectangle formed by [1 <= x <= (q-1)/2] and [1 <= y <= (p-1)/2], where p = n-th prime, q = (n-1)-st prime.

Table of values

List of values