A319156 - cp's OEIS frontend

A319156 Number of ways to build a contiguous building with n LEGO blocks of size 1 X 2 which is flat, i.e., with all blocks in parallel position.

n	a(n)
1	1
2	3
3	11
4	44
5	186
6	814
7	3656
8	16731
9	77705
10	365095
11	1731797
12	8279363
13	39845689
14	192852359
15	937986507
16	4581678031
17	22464030959
18	110509938701
19	545269104263
20	2697646445713
21	13378627003520
22	66495716465315
23	331167284581601
24	1652340114446553
25	8258197397705302

[1, 3, 11, 44, 186, 814, 3656, 16731, 77705, 365095, 1731797, 8279363, 39845689, 192852359, 937986507, 4581678031, 22464030959, 110509938701, 545269104263, 2697646445713, 13378627003520, 66495716465315, 331167284581601, 1652340114446553, 8258197397705302]

cp's OEIS Frontend

A319156 Number of ways to build a contiguous building with n LEGO blocks of size 1 X 2 which is flat, i.e., with all blocks in parallel position.

Table of values

List of values