A371349 Odd addends k > 0 such that x^2 + x + k produces a new minimum of its Hardy-Littlewood Constant.

1, 3, 9, 15, 33, 63, 75, 225, 243, 273, 453, 813, 1275, 1443, 2763, 3003, 6693, 9933, 10515

Offset: 1

Author

Hugo Pfoertner, Apr 11 2024, suggested by Martin Raab

Keywords

• nonn
• hard
• more

Links

• Martin Raab, Post in thread Ponder This - March 2024, at Mersenneforum.org, Apr 08 2024 (suggests this sequence).

Crossrefs

Cf. A331940 for more information.

Programs

PARI

\\ Uses function HardyLittlewood2 from a221712.gp; see link in A331940
a371349(upto) = {my (Hmin=oo); forstep (k=1, upto, 2, my (H=HardyLittlewood2(x^2+x+k)); if (H