A262259 - cp's OEIS frontend

A262259 Numbers k such that the symmetric representation of sigma(k) has only two parts and they meet at the center of the Dyck path.

n	a(n)
1	3
2	10
3	78
4	136
5	666
6	820
7	1830
8	2628
9	4656
10	5886
11	6328
12	16290
13	18528
14	28920
15	32896
16	39340
17	48828
18	56616
19	62128
20	78606
21	80200
22	83436
23	88410
24	93528
25	100576
26	104196
27	135460
28	146070
29	166176
30	180300
31	187578
32	190036

[3, 10, 78, 136, 666, 820, 1830, 2628, 4656, 5886, 6328, 16290, 18528, 28920, 32896, 39340, 48828, 56616, 62128, 78606, 80200, 83436, 88410, 93528, 100576, 104196, 135460, 146070, 166176, 180300, 187578, 190036]

cp's OEIS Frontend

A262259 Numbers k such that the symmetric representation of sigma(k) has only two parts and they meet at the center of the Dyck path.

Table of values

List of values