A176588 - cp's OEIS frontend

A176588 a(n) = A176558(A175354(n)) = numbers m as reverse concatenations of divisors of numbers from A175354, where A175354 = numbers k such that reverse concatenations of divisors of k are nonprimes.

n	a(n)
1	1
2	21
3	51
4	6321
5	8421
6	931
7	10521
8	111
9	1264321
10	14721
11	15531
12	168421
13	171
14	1896321
15	20105421
16	21731
17	221121
18	231
19	2412864321
20	261321
21	27931
22	28147421
23	291
24	30151065321
25	32168421
26	331131
27	341721
28	35751
29	361812964321
30	371

[1, 21, 51, 6321, 8421, 931, 10521, 111, 1264321, 14721, 15531, 168421, 171, 1896321, 20105421, 21731, 221121, 231, 2412864321, 261321, 27931, 28147421, 291, 30151065321, 32168421, 331131, 341721, 35751, 361812964321, 371]

cp's OEIS Frontend

A176588 a(n) = A176558(A175354(n)) = numbers m as reverse concatenations of divisors of numbers from A175354, where A175354 = numbers k such that reverse concatenations of divisors of k are nonprimes.

Table of values

List of values