A353447 - cp's OEIS frontend

A353447 a(n) is the number of tetrapods standing on the four edges of an n X n grid, so that no two feet are the same distance apart and no foot is on a corner. Tetrapods with congruent footprints are counted only once.

n	a(n)
3	0
4	0
5	1
6	11
7	40
8	105
9	190
10	379
11	616
12	987
13	1426
14	2139
15	2964
16	4130
17	5403
18	7180
19	9155
20	11716
21	14458
22	18092
23	22037
24	26808
25	31793
26	38343
27	45060
28	53184
29	61613
30	71878
31	82466
32	95368
33	108195
34	123790
35	140040
36	158457
37	177405
38	200020
39	223039
40	248769
41	275214
42	306411
43	337645

[0, 0, 1, 11, 40, 105, 190, 379, 616, 987, 1426, 2139, 2964, 4130, 5403, 7180, 9155, 11716, 14458, 18092, 22037, 26808, 31793, 38343, 45060, 53184, 61613, 71878, 82466, 95368, 108195, 123790, 140040, 158457, 177405, 200020, 223039, 248769, 275214, 306411, 337645]

cp's OEIS Frontend

A353447 a(n) is the number of tetrapods standing on the four edges of an n X n grid, so that no two feet are the same distance apart and no foot is on a corner. Tetrapods with congruent footprints are counted only once.

Table of values

List of values