A144549 - cp's OEIS frontend

A144549 Triangular numbers p*(p+1)/2 with p prime such that 1+(number of prime factors of p+1) is prime.

n	a(n)
1	3
2	6
3	15
4	91
5	276
6	703
7	1431
8	1770
9	1891
10	2701
11	3486
12	4005
13	5356
14	8646
15	9730
16	11175
17	11476
18	12403
19	18721
20	19503
21	24976
22	25878
23	27261
24	28680
25	38503
26	43071
27	47278
28	49141
29	60378
30	61075
31	64620
32	72010
33	75855
34	79003
35	88831
36	98346
37	104653
38	106491

[3, 6, 15, 91, 276, 703, 1431, 1770, 1891, 2701, 3486, 4005, 5356, 8646, 9730, 11175, 11476, 12403, 18721, 19503, 24976, 25878, 27261, 28680, 38503, 43071, 47278, 49141, 60378, 61075, 64620, 72010, 75855, 79003, 88831, 98346, 104653, 106491]

cp's OEIS Frontend

A144549 Triangular numbers p*(p+1)/2 with p prime such that 1+(number of prime factors of p+1) is prime.

Table of values

List of values