A249830 Natural numbers having no valid Luhn mod 10 check digit.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 73

Offset

1,2

Comments

A249832(a(n)) = 0; A093017(a(n)) mod 10 > 0.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Wikipedia, Luhn algorithm

Index entries for sequences related to decimal expansion of n

Prog

(Haskell)
a249830 n = a249830_list !! (n-1)
a249830_list = filter ((== 0) . a249832) [0..]

Crossrefs

Cf. A249832, A093017, A093018 (complement).

Sequence in context: A325400 A342523 A367615 * A300473 A271980 A353886

Adjacent sequences: A249827 A249828 A249829 * A249831 A249832 A249833

Keyword

nonn

Author

Reinhard Zumkeller, Nov 08 2014

Status

approved