A032700 Exactly 4 digits from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a lucky number.

9, 29, 35, 83, 85, 93, 123, 173, 211, 233, 249, 339, 379, 419, 427, 471, 473, 487, 501, 551, 575, 587, 621, 625, 675, 687, 763, 773, 787, 801, 809, 841, 915, 951, 999, 1039, 1055, 1073, 1157, 1169, 1189, 1191, 1207, 1239, 1341, 1405, 1425, 1529, 1617, 1721

Offset

1,1

Links

Table of n, a(n) for n=1..50.

Example

If a(n) = 1617 then we find only '1'1617, '3'1617, '6'1617 and '7'1617 to be lucky numbers.

Crossrefs

Cf. A000959.

Sequence in context: A258483 A044976 A002642 * A322946 A350963 A098949

Adjacent sequences: A032697 A032698 A032699 * A032701 A032702 A032703

Keyword

nonn,base,less

Author

Patrick De Geest, May 15 1998

Status

approved