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A241791 Triangular numbers which have one or more occurrences of exactly eight different digits. 7
10348975, 10623745, 10725396, 10869453, 10934826, 12347965, 12357906, 12487503, 12647935, 12673095, 12784096, 13862745, 14756028, 14826735, 15237960, 15298746, 15304278, 15879430, 16247850, 16384950, 17084935, 17502486, 17543926, 17829406 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The first term having a repeated digit is 100642578.

LINKS

Colin Barker, Table of n, a(n) for n = 1..2000

MATHEMATICA

Select[Accumulate[Range[7000]], Length[Union[IntegerDigits[#]]]==8&] (* Harvey P. Dale, Feb 09 2019 *)

PROG

(PARI) s=[]; for(n=0, 7000, if(#vecsort(eval(Vec(Str(n*(n+1)/2))), , 8)==8, s=concat(s, n*(n+1)/2))); s

CROSSREFS

Cf. A045914, A062691, A162304, A241787, A241788, A241789, A241790, A241792, A241812.

Cf. A000217.

Sequence in context: A061407 A152155 A159837 * A234198 A186921 A185805

Adjacent sequences:  A241788 A241789 A241790 * A241792 A241793 A241794

KEYWORD

nonn,base

AUTHOR

Colin Barker, Apr 28 2014

STATUS

approved

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Last modified June 24 21:50 EDT 2021. Contains 345433 sequences. (Running on oeis4.)