cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A084988 Numbers made with nonprime digits such that the sum of the digits is also not prime.

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%I A084988 #3 Jul 20 2017 10:19:07
%S A084988 1,4,6,8,9,10,18,19,40,44,46,48,60,64,66,68,69,80,81,84,86,88,90,91,
%T A084988 96,99,100,108,109,114,116,118,141,144,149,161,168,169,180,181,186,
%U A084988 189,190,194,196,198
%N A084988 Numbers made with nonprime digits such that the sum of the digits is also not prime.
%H A084988 Harvey P. Dale, <a href="/A084988/b084988.txt">Table of n, a(n) for n = 1..5000</a>
%e A084988 E.g. 46 is not prime and 4+6 =10 is also not prime.
%t A084988 Select[Rest[FromDigits/@Tuples[{0,1,4,6,8,9},3]],!PrimeQ[ Total[ IntegerDigits[ #]]]&] (* _Harvey P. Dale_, Jul 20 2017 *)
%Y A084988 Cf. A084984.
%K A084988 nonn,base
%O A084988 1,2
%A A084988 Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 27 2003