[seqfan] %S A1 33,52,1716,...
zakseidov at yahoo.com
Thu Jan 8 04:00:25 CET 2009
1. is the sequence finite?
2. what about other cases of "a" in "is equal to n+a" with more terms?
2a. (note that in case a=1 there are only 3 terms cf. A153874)
%S A000001 33,52,1716,14352,32352,1166352
%N A000001 Numbers n such that square of product of n's digits is equal to n+48.
%C A000001 Is the sequence finite?
%Y A000001 Cf. A153874 Numbers n=abc...k such that a^2*b^2*c^2*...k^2-1=n.
%K A000001 base,nonn
%O A000001 1,1
%A A000001 Zak Seidov (zakseidov(AT)yahoo.com), Jan 07 2009
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