A229314 - cp's OEIS frontend

A229314 Number of n X 1 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1) X 2 0..3 array without adjacent equal elements in the latter.

n	a(n)
1	4
2	14
3	50
4	176
5	622
6	2196
7	7756
8	27390
9	96730
10	341606
11	1206400
12	4260462
13	15046040
14	53135856
15	187651986
16	662702554
17	2340367858
18	8265128408
19	29188722358
20	103081461140
21	364037435444
22	1285616763070
23	4540221143674
24	16034022443998

[4, 14, 50, 176, 622, 2196, 7756, 27390, 96730, 341606, 1206400, 4260462, 15046040, 53135856, 187651986, 662702554, 2340367858, 8265128408, 29188722358, 103081461140, 364037435444, 1285616763070, 4540221143674, 16034022443998]

cp's OEIS Frontend

A229314 Number of n X 1 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1) X 2 0..3 array without adjacent equal elements in the latter.

Table of values

List of values