A380807 - OEIS

%I #6 Feb 04 2025 09:34:35

%S 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,19,20,22,23,24,26,28,30,31,

%T 34,36,38,40,43,44,46,48,50,54,55,58,64,66,68,76,78,79,80,90,94,100,

%U 106,108,118,120,124,134,138,148,156,160,170,178,198,220,271,274,288,358,376,498,750,828

%N Numbers not of form a*(b+1) + b*(c+1) + c*(a+1) for 0<a<b<c.

%Y Cf. A000926, A380806.

%K nonn

%O 1,2

%A _Seiichi Manyama_, Feb 04 2025