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Search: id:A115939
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A115939 Numbers n such that the n-th triangular number contains each of the 10 decimal digits exactly once. +0
2
46097, 49796, 50139, 55151, 55484, 56520, 58050, 62495, 62567, 62900, 66294, 68805, 69542, 70766, 72594, 73737, 73971, 74168, 74357, 75555, 76364, 77805, 78686, 78848, 84555, 85959, 86076, 87263, 87669, 88406, 89883, 90287, 90297 (list; graph; listen)
OFFSET

1,1

COMMENT

There are 82 such numbers, the largest being 138959.

LINKS

Zak Seidov, Table of n, a(n) for n = 1..82

EXAMPLE

T(75555)=2854316790.

CROSSREFS

Cf. A115940.

Sequence in context: A159725 A061405 A061529 this_sequence A157527 A103950 A057068

Adjacent sequences: A115936 A115937 A115938 this_sequence A115940 A115941 A115942

KEYWORD

nonn,base,fini

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.


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