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A111482
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Least triangular number whose digits include a permutation of {0,1,...,n}.
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0
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OFFSET
| 0,2
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COMMENTS
| Note that this is not "Least triangular number whose digits ARE a permutation of {0,1,...,n}" because there is no such value for n = 3, for instance 3321 = T(81) has no zero. Are there equivalents in all integer bases?
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EXAMPLE
| a(0) = 0 = T(0).
a(1) = 10 = T(4).
a(2) = 120 = T(15).
a(3) = 12403 = T(157).
a(4) = 12403 = T(157).
a(5) = 231540 = T(680).
a(6) = 1053426 = T(1451).
a(7) = 10623745 = T(4609).
a(8) = 120784653 = T(15542).
a(9) = 1062489753 = T(46097).
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CROSSREFS
| Cf. A000217.
Sequence in context: A069671 A138445 A138496 * A095870 A178928 A111695
Adjacent sequences: A111479 A111480 A111481 * A111483 A111484 A111485
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KEYWORD
| base,easy,fini,full,nonn
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 15 2005
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 19 2005
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