A054150 - cp's OEIS frontend

A054150 Number of positive integers <= 2^n of the form x^2 + 5*y^2.

n	a(n)
0	1
1	1
2	2
3	4
4	7
5	13
6	22
7	40
8	73
9	132
10	245
11	458
12	864
13	1638
14	3123
15	5979
16	11484
17	22140
18	42773
19	82865
20	160809
21	312659
22	608857
23	1187323
24	2318344
25	4531879
26	8867913
27	17369053
28	34048772
29	66799240
30	131146379
31	257651913
32	506503984
33	996288321

[1, 1, 2, 4, 7, 13, 22, 40, 73, 132, 245, 458, 864, 1638, 3123, 5979, 11484, 22140, 42773, 82865, 160809, 312659, 608857, 1187323, 2318344, 4531879, 8867913, 17369053, 34048772, 66799240, 131146379, 257651913, 506503984, 996288321]

cp's OEIS Frontend

A054150 Number of positive integers <= 2^n of the form x^2 + 5*y^2.

Table of values

List of values