A151910 First differences of A001682.

21, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23, 21, 23, 21, 23, 21, 21, 23

Offset

1,1

Comments

a(n) = A001682(n+1) - A001682(n).

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

Prog

(Haskell)
a151910 n = a151910_list !! (n-1)
a151910_list = zipWith (-) (tail a001682_list) a001682_list
-- Reinhard Zumkeller, Oct 10 2011

Crossrefs

Sequence in context: A291433 A010860 A158772 * A040421 A022355 A371100

Adjacent sequences: A151907 A151908 A151909 * A151911 A151912 A151913

Keyword

nonn

Author

Harvey P. Dale, Aug 08 2009

Extensions

Offset corrected and initial term added by Reinhard Zumkeller, Oct 10 2011

Status

approved