A241792 Triangular numbers which have one or more occurrences of exactly nine different digits.

102738945, 120784653, 120893475, 124875306, 126794850, 129854670, 137904528, 142087653, 143287056, 147069825, 149826705, 152783940, 153694278, 160249753, 162495378, 168370425, 173249805, 189725460, 192540876, 193405278, 197438256, 207193546, 230469715

Offset: 1

Author

Colin Barker, Apr 28 2014

Keywords

• nonn
• base

Comments

The first term having a repeated digit is 1004976528.

Links

• Colin Barker, Table of n, a(n) for n = 1..1500

Crossrefs

Cf. A045914, A062691, A162304, A241787, A241788, A241789, A241790, A241791, A241812.

Cf. A000217.

Programs

PARI

s=[]; for(n=0, 40000, if(#vecsort(eval(Vec(Str(n*(n+1)/2))), , 8)==9, s=concat(s, n*(n+1)/2))); s