A336768 - cp's OEIS frontend

A336768 Irregular triangle where the n-th row list the positive integers which can be written in two bases smaller than n as mutually-reversed strings of digit(s), for n>=4.

n	a(n)
4	1
5	1
6	2
7	22
8	1
9	2
10	3
11	7
12	22
13	1
14	2
15	3
16	4
17	7
18	22
19	87
20	9831
21	1
22	2
23	3
24	4
25	5
26	7
27	9
28	17
29	22
30	51
31	87
32	102
33	2601
34	9831
35	314767045
36	1
37	2
38	3
39	4
40	5
41	6
42	7
43	9
44	17
45	22
46	51
47	87
48	91
49	102
50	220
51	2601
52	5258
53	7491
54	8283
55	9831
56	10516
57	13541
58	15774
59	16566
60	71500
61	644765
62	3552340
63	314767045
64	1427310725
65	1848187230
66	1916060910

[1, 1, 2, 22, 1, 2, 3, 7, 22, 1, 2, 3, 4, 7, 22, 87, 9831, 1, 2, 3, 4, 5, 7, 9, 17, 22, 51, 87, 102, 2601, 9831, 314767045, 1, 2, 3, 4, 5, 6, 7, 9, 17, 22, 51, 87, 91, 102, 220, 2601, 5258, 7491, 8283, 9831, 10516, 13541, 15774, 16566, 71500, 644765, 3552340, 314767045, 1427310725, 1848187230, 1916060910]

cp's OEIS Frontend

A336768 Irregular triangle where the n-th row list the positive integers which can be written in two bases smaller than n as mutually-reversed strings of digit(s), for n>=4.

Table of values

List of values