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URL: https://oeis.org/A048150

⇱ A048150 - OEIS

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A048150
a(n)=number of numbers h^2+k^2 that are <=2n^2; equivalently, a(n)=T(n,n), array T as in A048149.
0
1, 4, 9, 20, 31, 48, 65, 86, 113, 140, 173, 206, 239, 286, 327, 378, 425, 478, 533, 590, 659, 722, 793, 862, 933, 1020, 1099, 1184, 1271, 1360, 1455, 1550, 1655, 1758, 1865, 1976, 2079, 2202, 2319, 2448, 2569, 2694, 2827, 2960
OFFSET
0,2
CROSSREFS
Sequence in context: A075385 A380837 A379066 * A177441 A394499 A241944
KEYWORD
nonn
STATUS
approved