login
This site is supported by donations to The OEIS Foundation.

 

Logo

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031883 First differences of lucky numbers. 13
2, 4, 2, 4, 2, 6, 4, 6, 2, 4, 6, 6, 2, 12, 4, 2, 4, 2, 4, 8, 6, 6, 6, 6, 4, 12, 2, 4, 2, 6, 10, 8, 4, 6, 2, 18, 4, 2, 6, 4, 6, 8, 4, 8, 4, 2, 4, 18, 2, 6, 6, 10, 2, 4, 8, 6, 4, 12, 2, 6, 4, 8, 10, 8, 4, 6, 18, 6, 2, 6, 10, 6, 6, 6, 2, 4, 18, 12, 12, 2, 6, 4, 2, 6, 16, 6, 2, 10, 6, 2, 4, 12, 6, 18, 2, 4, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A254967(n,n-1). - Reinhard Zumkeller, Feb 11 2015

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

MATHEMATICA

lst = Range[1, 600, 2]; i = 2; While[ i <= (len = Length@lst) && (k = lst[[i]]) <= len, lst = Drop[lst, {k, len, k}]; i++ ]; Rest@lst - Most@lst (* Robert G. Wilson v, May 12 2006 *)

PROG

(Haskell)

a031883 n = a031883_list !! (n-1)

a031883_list = zipWith (-) (tail a000959_list) a000959_list

-- Reinhard Zumkeller, Feb 11 2015

CROSSREFS

Cf. A000959.

Cf. A254967.

Sequence in context: A056672 A037201 A128886 * A086152 A194577 A274708

Adjacent sequences:  A031880 A031881 A031882 * A031884 A031885 A031886

KEYWORD

nonn,easy

AUTHOR

Patrick De Geest

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified August 18 20:11 EDT 2017. Contains 290762 sequences.