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A241790 Triangular numbers which have one or more occurrences of exactly seven different digits. 7
1024596, 1047628, 1053426, 1069453, 1073845, 1078246, 1203576, 1234806, 1345620, 1360425, 1362075, 1386945, 1390278, 1405326, 1430586, 1439056, 1462905, 1486950, 1493856, 1547920, 1549680, 1590436, 1602945, 1624503, 1642578, 1679028, 1684530, 1693720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The first term having a repeated digit is 10149765.

LINKS

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

PROG

(PARI) s=[]; for(n=0, 2500, if(#vecsort(eval(Vec(Str(n*(n+1)/2))), , 8)==7, s=concat(s, n*(n+1)/2))); s

CROSSREFS

Cf. A045914, A062691, A162304, A241787, A241788, A241789, A241791, A241792, A241812.

Cf. A000217.

Sequence in context: A235695 A206053 A263129 * A143133 A235106 A159816

Adjacent sequences:  A241787 A241788 A241789 * A241791 A241792 A241793

KEYWORD

nonn,base

AUTHOR

Colin Barker, Apr 28 2014

STATUS

approved

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Last modified June 18 06:02 EDT 2021. Contains 345098 sequences. (Running on oeis4.)