%N Numbers k whose decimal representation, read as a base-21 value and divided by k, yields an integer.
%C Original name: Base 21 value of decimal denominator divided by this decimal value (n) is an integer.
%e 1837 is a term: 1837_21 = 12859 = 1837*7. - _Jon E. Schoenfield_, Oct 25 2019
%Y Cf. A032574. See also A032563 for explanation.
%A _Patrick De Geest_, Apr 15 1998
%E Offset changed and Name edited by _Jon E. Schoenfield_, Oct 25 2019