A099148 - cp's OEIS frontend

A099148 Take a <= b such that f(a)+f(b)=concatenation of a and b, where f(k)=k(k+3)/2 (A000096). Sequence gives values of a.

n	a(n)
1	2
2	3
3	8
4	9
5	14
6	15
7	20
8	39
9	77
10	98
11	99
12	138
13	158
14	164
15	177
16	200
17	399
18	492
19	614
20	998
21	999
22	1065
23	1383
24	1505
25	1598
26	1797
27	1859
28	1920
29	2000
30	2655
31	3077
32	3213
33	3762
34	3999
35	6707

[2, 3, 8, 9, 14, 15, 20, 39, 77, 98, 99, 138, 158, 164, 177, 200, 399, 492, 614, 998, 999, 1065, 1383, 1505, 1598, 1797, 1859, 1920, 2000, 2655, 3077, 3213, 3762, 3999, 6707]

cp's OEIS Frontend

A099148 Take a <= b such that f(a)+f(b)=concatenation of a and b, where f(k)=k(k+3)/2 (A000096). Sequence gives values of a.

Table of values

List of values