A351635 - cp's OEIS frontend

A351635 a(n) is the number of perfect matchings of an edge-labeled 2 X n Klein bottle grid graph, or equivalently the number of domino tilings of a 2 X n Klein bottle grid. (The twist is on the length-n side.)

n	a(n)
1	2
2	6
3	10
4	16
5	38
6	54
7	142
8	196
9	530
10	726
11	1978
12	2704
13	7382
14	10086
15	27550
16	37636
17	102818
18	140454
19	383722
20	524176
21	1432070
22	1956246
23	5344558
24	7300804
25	19946162
26	27246966
27	74440090
28	101687056
29	277814198
30	379501254
31	1036816702
32	1416317956
33	3869452610
34	5285770566
35	14440993738
36	19726764304
37	53894522342
38	73621286646

[2, 6, 10, 16, 38, 54, 142, 196, 530, 726, 1978, 2704, 7382, 10086, 27550, 37636, 102818, 140454, 383722, 524176, 1432070, 1956246, 5344558, 7300804, 19946162, 27246966, 74440090, 101687056, 277814198, 379501254, 1036816702, 1416317956, 3869452610, 5285770566, 14440993738, 19726764304, 53894522342, 73621286646]

cp's OEIS Frontend

A351635 a(n) is the number of perfect matchings of an edge-labeled 2 X n Klein bottle grid graph, or equivalently the number of domino tilings of a 2 X n Klein bottle grid. (The twist is on the length-n side.)

Table of values

List of values