A115940 Pandigital (meaning every digit appears exactly once) triangular numbers.

1062489753, 1239845706, 1256984730, 1520843976, 1539264870, 1597283460, 1684930275, 1952843760, 1957346028, 1978236450, 2197480365, 2367098415, 2418079653, 2503948761, 2634980715, 2718609453, 2735891406, 2750483196

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base
• fini
• full

Comments

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

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

Examples

			T(46097)=1062489753.
		

Links

• Zak Seidov, Table of n, a(n) for n = 1..82 (full sequence)
• Fun With Num3ers, Pandigital Binomial coefficient | When C(n, k) is pandigital.

Crossrefs

Cf. A050278, A115939.