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A178477 Permutations of 1234567: Numbers having each of the decimal digits 1,...,7 exactly once, and no other digit. 4
1234567, 1234576, 1234657, 1234675, 1234756, 1234765, 1235467, 1235476, 1235647, 1235674, 1235746, 1235764, 1236457, 1236475, 1236547, 1236574, 1236745, 1236754, 1237456, 1237465, 1237546, 1237564, 1237645, 1237654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

It would be nice to have a simple explicit formula for the n-th term.

Contains A000142(7) = 5040 terms. - R. J. Mathar, Apr 08 2011

An efficient procedure for generating the n-th term of this sequence can be found at A178475. - Nathaniel Johnston, May 19 2011

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..5040 (full sequence)

MATHEMATICA

FromDigits/@Take[Permutations[Range[7]], 50] (* Harvey P. Dale, Nov 11 2012 *)

PROG

(PARI) is_A178477(x)= { vecsort(Vec(Str(x)))==Vec("1234567") }

CROSSREFS

Cf. A030298, A030299, A055089, A060117, A178475, A178476.

Sequence in context: A282424 A129347 A071146 * A144694 A156113 A118900

Adjacent sequences:  A178474 A178475 A178476 * A178478 A178479 A178480

KEYWORD

nonn,fini,full,easy,base

AUTHOR

M. F. Hasler, Oct 09 2010

STATUS

approved

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Last modified July 9 22:46 EDT 2020. Contains 335570 sequences. (Running on oeis4.)