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A049735 Array T read by diagonals; T(i,j)=number of lattice points (x,y) in circle with radius (0,0)-to-(i,j). 10
1, 5, 5, 13, 9, 13, 29, 21, 21, 29, 49, 37, 25, 37, 49, 81, 57, 45, 45, 57, 81, 113, 89, 69, 61, 69, 89, 113, 149, 121, 97, 81, 81, 97, 121, 149, 197, 161, 129, 109, 101, 109, 129, 161, 197, 253, 213, 177, 145, 137, 137, 145, 177, 213, 253 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..54.

EXAMPLE

T(n,0)=A000328(n).

CROSSREFS

Diagonals (each starting on row 1): {1}, {5, 5}, {13, 9, 13}, ...

Sequence in context: A206553 A122213 A224067 * A055526 A146984 A055524

Adjacent sequences:  A049732 A049733 A049734 * A049736 A049737 A049738

KEYWORD

nonn,tabl

AUTHOR

Clark Kimberling

EXTENSIONS

Specifically, x^2 + y^2 <= i^2 + j^2.

STATUS

approved

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Last modified January 25 03:16 EST 2021. Contains 340415 sequences. (Running on oeis4.)