A133107 - cp's OEIS frontend

A133107 Number of Ferrers diagrams with a single strictly smaller Ferrers puncture with the same orientation removed from the top with half-perimeter = n.

n	a(n)
6	1
7	7
8	32
9	121
10	410
11	1294
12	3888
13	11273
14	31826
15	88041
16	239734
17	644758
18	1717191
19	4538129
20	11919760
21	31156313
22	81125827
23	210604604
24	545462798
25	1410226551
26	3641097828
27	9391872711
28	24208902420
29	62373915102
30	160663604377

[1, 7, 32, 121, 410, 1294, 3888, 11273, 31826, 88041, 239734, 644758, 1717191, 4538129, 11919760, 31156313, 81125827, 210604604, 545462798, 1410226551, 3641097828, 9391872711, 24208902420, 62373915102, 160663604377]

cp's OEIS Frontend

A133107 Number of Ferrers diagrams with a single strictly smaller Ferrers puncture with the same orientation removed from the top with half-perimeter = n.

Table of values

List of values