A369734 - cp's OEIS frontend

A369734 Number of solutions to 1^2k_1 + 2^2k_2 + ... + n^2*k_n = 1, where k_i are from {-1,0,1}, i=1..n.

n	a(n)
0	0
1	1
2	1
3	1
4	1
5	3
6	8
7	17
8	35
9	79
10	177
11	409
12	995
13	2475
14	6336
15	16078
16	41401
17	107304
18	279550
19	736032
20	1950000
21	5199850
22	13950852
23	37576658
24	101670863
25	276228026
26	753114256
27	2060995699
28	5658663542
29	15583477334
30	43039552072
31	119179072495
32	330836308272
33	920537185436

[0, 1, 1, 1, 1, 3, 8, 17, 35, 79, 177, 409, 995, 2475, 6336, 16078, 41401, 107304, 279550, 736032, 1950000, 5199850, 13950852, 37576658, 101670863, 276228026, 753114256, 2060995699, 5658663542, 15583477334, 43039552072, 119179072495, 330836308272, 920537185436]

cp's OEIS Frontend

A369734 Number of solutions to 1^2k_1 + 2^2k_2 + ... + n^2*k_n = 1, where k_i are from {-1,0,1}, i=1..n.

Table of values

List of values

cp's OEIS Frontend

A369734 Number of solutions to 1^2*k_1 + 2^2*k_2 + ... + n^2*k_n = 1, where k_i are from {-1,0,1}, i=1..n.

Table of values

List of values

A369734 Number of solutions to 1^2k_1 + 2^2k_2 + ... + n^2*k_n = 1, where k_i are from {-1,0,1}, i=1..n.