A093026 Indices of terms in A093019 with value 6.

2, 16, 21, 35, 40, 59, 64, 78, 83, 97, 101, 115, 120, 139, 144, 158, 163, 177, 182, 196, 200, 219, 224, 238, 243, 257, 262, 276, 281, 295, 304, 318, 323, 337, 342, 356, 361, 375, 380, 399, 403, 417, 422, 436, 441, 455, 460, 479, 484, 498, 506, 511, 525, 530

Offset

1,1

Comments

Integers which require a following 6 to have a valid Luhn mod 10 check digit.

Links

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

John Kilgo, Using the Luhn Algorithm, DotNetJohn.com.

Webopedia, Luhn formula

Wikipedia, Luhn algorithm

Index entries for sequences related to decimal expansion of n

Formula

A093019(a(n)) = 6. - Reinhard Zumkeller, Nov 08 2014

Example

16 is in the sequence because A093019(16)=6; 166 has a valid Luhn mod 10 check digit.

Prog

(Haskell)
a093026 n = a093026_list !! (n-1)
a093026_list = filter ((== 6) . a093019) [0..]
-- Reinhard Zumkeller, Nov 08 2014

Crossrefs

Cf. A093017-A093029.

Sequence in context: A082475 A333998 A081767 * A271627 A118954 A119599

Adjacent sequences: A093023 A093024 A093025 * A093027 A093028 A093029

Keyword

easy,nonn,base

Author

Ray Chandler, Apr 03 2004

Extensions

Offset changed by Reinhard Zumkeller, Nov 08 2014

Status

approved