Search: id:A098826
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%I A098826
%S A098826 44,252,434,464,4004,46664,2005002,49099094,414878414,431313134,
%T A098826 4370654560734,200000050000002,417622181226714,202837977779738202,
%U A098826 2574289191919824752
%N A098826 Palindromes that are 1 more than a prime and 1 less than a triangular 
               number.
%e A098826 a(1) = 44 because 44 is the smallest (first) palindrome that is 1 more 
               than a prime (43) and 1 less than a triangular number (45).
%t A098826 Do[t = n(n + 1)/2 - 1; If[EvenQ[t], If[PrimeQ[t - 1], If[t == FromDigits[ 
               Reverse[ IntegerDigits[ t]]], Print[t]]]], {n, 10^9}] (from Robert 
               G. Wilson v Nov 04 2004)
%Y A098826 Sequence in context: A122235 A122245 A031175 this_sequence A160284 A060836 
               A135182
%Y A098826 Adjacent sequences: A098823 A098824 A098825 this_sequence A098827 A098828 
               A098829
%K A098826 base,nonn
%O A098826 1,1
%A A098826 Anonymous, Nov 02 2004

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