A061348 - cp's OEIS frontend

A061348 Consider a (solid) triangle with n cells on each edge, for a total of n(n+1)/2 cells; a(n) is number of inequivalent ways of labeling cells with 0's and 1's; triangle may be rotated and turned over.

n	a(n)
1	2
2	4
3	20
4	208
5	5728
6	351616
7	44772352
8	11453771776
9	5864078802944
10	6004800040206336
11	12297829416834170880
12	50371909152808594571264
13	412646679762074900658913280
14	6760803201217259503457555972096
15	221537999297485988040673580072042496

[2, 4, 20, 208, 5728, 351616, 44772352, 11453771776, 5864078802944, 6004800040206336, 12297829416834170880, 50371909152808594571264, 412646679762074900658913280, 6760803201217259503457555972096, 221537999297485988040673580072042496]

cp's OEIS Frontend

A061348 Consider a (solid) triangle with n cells on each edge, for a total of n(n+1)/2 cells; a(n) is number of inequivalent ways of labeling cells with 0's and 1's; triangle may be rotated and turned over.

Table of values

List of values