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Pandigital (meaning every digit appears exactly once) triangular numbers.
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%I #17 Apr 15 2022 11:21:58

%S 1062489753,1239845706,1256984730,1520843976,1539264870,1597283460,

%T 1684930275,1952843760,1957346028,1978236450,2197480365,2367098415,

%U 2418079653,2503948761,2634980715,2718609453,2735891406,2750483196

%N Pandigital (meaning every digit appears exactly once) triangular numbers.

%C There are 82 such numbers, the largest being T(138959)=9654871320.

%C The sequence of pandigital binomial coefficients C(m,k) with k>1 contains 84 numbers, these 82 triangular terms of the form C(m,2) and only two other ones C(595,4) = 5169738420 and C(253,5) = 8301429675 (see link). - _Bernard Schott_, Apr 15 2022

%H Zak Seidov, <a href="/A115940/b115940.txt">Table of n, a(n) for n = 1..82</a> (full sequence)

%H Fun With Num3ers, <a href="https://benvitalenum3ers.wordpress.com/2016/05/02/pandigital-binomial-coefficient-when-cn-k-is-pandigita/">Pandigital Binomial coefficient | When C(n, k) is pandigital</a>.

%e T(46097)=1062489753.

%Y Cf. A050278, A115939.

%K nonn,base,fini,full

%O 1,1

%A _Giovanni Resta_, Feb 06 2006