A324010 - cp's OEIS frontend

A324010 The sum of squares of the number of common points in all pairs of lattice paths from (0,0) to (x,y), for x >= 0, y >= 0 (the unnormalized second moment). The table is read by antidiagonals.

n	a(n)
0	1
1	4
2	4
3	9
4	26
5	9
6	16
7	92
8	92
9	16
10	25
11	240
12	474
13	240
14	25
15	36
16	520
17	1704
18	1704
19	520
20	36
21	49
22	994
23	4879
24	8084
25	4879
26	994
27	49
28	64
29	1736
30	11928
31	29560
32	29560
33	11928
34	1736
35	64
36	81
37	2832
38	25956
39	89928
40	134450
41	89928
42	25956
43	2832
44	81
45	100
46	4380
47	51648
48	238440
49	498140
50	498140
51	238440
52	51648
53	4380
54	100

[1, 4, 4, 9, 26, 9, 16, 92, 92, 16, 25, 240, 474, 240, 25, 36, 520, 1704, 1704, 520, 36, 49, 994, 4879, 8084, 4879, 994, 49, 64, 1736, 11928, 29560, 29560, 11928, 1736, 64, 81, 2832, 25956, 89928, 134450, 89928, 25956, 2832, 81, 100, 4380, 51648, 238440, 498140, 498140, 238440, 51648, 4380, 100]

cp's OEIS Frontend

A324010 The sum of squares of the number of common points in all pairs of lattice paths from (0,0) to (x,y), for x >= 0, y >= 0 (the unnormalized second moment). The table is read by antidiagonals.

Table of values

List of values