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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..43.

CROSSREFS

Sequence in context: A073360 A297190 A075385 * A177441 A241944 A256054

Adjacent sequences:  A048147 A048148 A048149 * A048151 A048152 A048153

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 3 16:46 EDT 2020. Contains 333197 sequences. (Running on oeis4.)