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A032701 Exactly 5 digits from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a lucky number. 0
19, 27, 31, 41, 253, 409, 567, 663, 827, 833, 977, 1089, 1421, 1475, 2635, 3021, 3419, 3633, 3781, 3953, 4197, 4293, 4423, 4721, 5255, 5671, 6187, 6469, 8187, 8467, 8661, 8837, 8989, 9615, 9921, 10477, 13569, 15055, 16037, 17637, 23597, 24693, 25273 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Finding 6, 7, 8 and 9 preceding digits is a difficult job!

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

If n = 977 then we find only '1'977, '2'977, '4'977, '5'977 and '8'977 to be lucky numbers.

CROSSREFS

Cf. A000959.

Sequence in context: A274685 A152013 A160036 * A226726 A006626 A259054

Adjacent sequences:  A032698 A032699 A032700 * A032702 A032703 A032704

KEYWORD

nonn,base,less

AUTHOR

Patrick De Geest, May 15 1998

EXTENSIONS

Terms > 10000 from R. J. Mathar, Oct 22 2010

STATUS

approved

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Last modified October 16 15:22 EDT 2021. Contains 348042 sequences. (Running on oeis4.)