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Least integer with n pentagonal divisors.
3

%I #9 Jul 27 2022 16:35:18

%S 1,5,35,70,210,420,2310,4620,18480,32340,60060,120120,240240,720720,

%T 1261260,1141140,2042040,4084080,4564560,13693680,19399380,58198140,

%U 95855760,38798760,116396280,193993800,77597520,232792560,543182640,387987600,1125164040

%N Least integer with n pentagonal divisors.

%H Rémy Sigrist, <a href="/A356132/a356132.txt">C program</a>

%o (PARI) a(n) = my(k=1); while (sumdiv(k, d, ispolygonal(d, 5)) != n, k++); k;

%o (C) See Links section.

%Y Cf. A000326, A130317, A279497.

%K nonn

%O 1,2

%A _Michel Marcus_, Jul 27 2022

%E More terms from _Rémy Sigrist_, Jul 27 2022