A052507 - cp's OEIS frontend

A052507 Take n-th palindromic prime p, let P = all primes having same digits; a(n) = q-p where q is smallest prime in P >p if q exists; otherwise a(n) = p-r where r is largest prime in P if r exists; otherwise a(n) = 0.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	18
8	180
9	180
10	0
11	630
12	630
13	720
14	720
15	18
16	18
17	0
18	36
19	360
20	360
21	0
22	450
23	450
24	180
25	180
26	90
27	90
28	180
29	180
30	720
31	72
32	72
33	0
34	198
35	702
36	1998
37	17010
38	17010
39	39600
40	900
41	900
42	540
43	5400
44	44100
45	900
46	900
47	18
48	180
49	180
50	0
51	180
52	1800
53	9900
54	17100
55	17100

[0, 0, 0, 0, 0, 0, 18, 180, 180, 0, 630, 630, 720, 720, 18, 18, 0, 36, 360, 360, 0, 450, 450, 180, 180, 90, 90, 180, 180, 720, 72, 72, 0, 198, 702, 1998, 17010, 17010, 39600, 900, 900, 540, 5400, 44100, 900, 900, 18, 180, 180, 0, 180, 1800, 9900, 17100, 17100]

cp's OEIS Frontend

A052507 Take n-th palindromic prime p, let P = all primes having same digits; a(n) = q-p where q is smallest prime in P >p if q exists; otherwise a(n) = p-r where r is largest prime in P if r exists; otherwise a(n) = 0.

Table of values

List of values