A337860 - cp's OEIS frontend

A337860 The number of vertically balanced self-avoiding walks of length n on the upper half-plane of a 2D square lattice where the nodes and connecting rods have equal mass.

n	a(n)
1	3
2	5
3	13
4	27
5	65
6	145
7	361
8	855
9	2163
10	5303
11	13419
12	33195
13	84159
14	210765
15	536871
16	1356153
17	3466533
18	8799247
19	22541583
20	57428441
21	147423495
22	376838119
23	969292869
24	2484478265
25	6401330591
26	16445203213
27	42434086359
28	109225591309
29	282209330237

[3, 5, 13, 27, 65, 145, 361, 855, 2163, 5303, 13419, 33195, 84159, 210765, 536871, 1356153, 3466533, 8799247, 22541583, 57428441, 147423495, 376838119, 969292869, 2484478265, 6401330591, 16445203213, 42434086359, 109225591309, 282209330237]

cp's OEIS Frontend

A337860 The number of vertically balanced self-avoiding walks of length n on the upper half-plane of a 2D square lattice where the nodes and connecting rods have equal mass.

Table of values

List of values