A241788 Triangular numbers which have one or more occurrences of exactly five different digits.

10296, 12403, 13695, 14028, 14365, 14706, 16290, 17205, 19306, 19503, 21736, 21945, 23871, 24310, 24531, 24753, 24976, 27495, 29403, 30628, 30876, 32640, 32896, 34716, 34980, 37128, 37401, 37950, 39621, 40186, 41328, 41905, 42195, 43071, 43956, 46971, 47586

Offset

1,1

Comments

The first term having a repeated digit is 100576.

Links

Colin Barker, Table of n, a(n) for n = 1..1000

Prog

(PARI) s=[]; for(n=0, 500, if(#vecsort(eval(Vec(Str(n*(n+1)/2))), , 8)==5, s=concat(s, n*(n+1)/2))); s

Crossrefs

Cf. A045914, A062691, A162304, A241787, A241789, A241790, A241791, A241792, A241812.

Cf. A000217.

Sequence in context: A257191 A257184 A254984 * A187937 A154089 A227410

Adjacent sequences: A241785 A241786 A241787 * A241789 A241790 A241791

Keyword

nonn,base

Author

Colin Barker, Apr 28 2014

Status

approved