A374275 Smallest k such that k can be written in exactly n ways as x^2 + 3*x*y + y^2 with 0 <= x <= y.

2, 0, 121, 2299, 6061, 43681, 66671, 33659659, 187891, 1266749, 8067191, 639533521, 2066801

Offset

0,1

Comments

a(n) is the smallest nonnegative k such that A374276(k) = n.

a(14) = 36735721.

a(15) = 153276629.

a(16) = 7703531.

a(18) = 39269219.

a(20) = 250082921.

a(24) = 84738841.

a(32) = 454508329.

Links

Table of n, a(n) for n=0..12.

Crossrefs

Cf. A000446, A198799.

Cf. A031363, A374091, A374095, A374276.

Sequence in context: A181373 A046065 A357542 * A339185 A003321 A012333

Adjacent sequences: A374272 A374273 A374274 * A374276 A374277 A374278

Keyword

nonn,more

Author

Seiichi Manyama, Jul 02 2024

Status

approved