A241790 Triangular numbers which have one or more occurrences of exactly seven different digits.

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

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