
EXAMPLE

First and smallest occurrence of n, n >= 3, consecutive deficient numbers in arithmetic progression:
a(3) = 1: (1, 2, 3);
a(4) = 1: (1, 2, 3, 4);
a(5) = 1: (1, 2, 3, 4, 5);
a(6) = 2987: (2987, 2989, 2991, 2993, 2995, 2997);
a(7) = 801339: (801339, 801341, 801343, 801345, 801347, 801349, 801351);
a(8) = 221355125: (221355125, 221355127, 221355129, 221355131, 221355133, 221355135, 221355137, 221355139);
a(9) = 221355125: (221355125, 221355127, 221355129, 221355131, 221355133, 221355135, 221355137, 221355139, 221355141);
