A007750 - cp's OEIS frontend

A007750 Nonnegative integers n such that n^2(n+1)(2n+1)^2(7*n+1)/36 is a square.

n	a(n)
0	0
1	1
2	7
3	24
4	120
5	391
6	1921
7	6240
8	30624
9	99457
10	488071
11	1585080
12	7778520
13	25261831
14	123968257
15	402604224
16	1975713600
17	6416405761
18	31487449351
19	102259887960
20	501823476024
21	1629741801607
22	7997688167041
23	25973608937760

[0, 1, 7, 24, 120, 391, 1921, 6240, 30624, 99457, 488071, 1585080, 7778520, 25261831, 123968257, 402604224, 1975713600, 6416405761, 31487449351, 102259887960, 501823476024, 1629741801607, 7997688167041, 25973608937760]

cp's OEIS Frontend

A007750 Nonnegative integers n such that n^2(n+1)(2n+1)^2(7*n+1)/36 is a square.

Table of values

List of values

cp's OEIS Frontend

A007750 Nonnegative integers n such that n^2*(n+1)*(2*n+1)^2*(7*n+1)/36 is a square.

Table of values

List of values

A007750 Nonnegative integers n such that n^2(n+1)(2n+1)^2(7*n+1)/36 is a square.