A262604 First difference of A252022.

1, 1, 1, 1, 5, -4, 5, -4, 5, 1, 1, 1, 5, -12, 13, -5, 6, -5, 13, -21, 31, -22, 13, -8, 1, 1, 7, -6, 7, 1, 1, 6, -14, 15, -6, 7, 1, 1, 5, -31, 41, -32, 23, -14, 15, -6, 7, 47, -71, 41, 31, -63, 23, 41, -55, 63, -71, 81, -72, 63, -57, 49, -48, 49, -42, 43, -42

Offset: 1

Author

Paul Tek, Sep 26 2015

Keywords

• sign
• look
• base

Comments

The graph of the sequence exhibits a kind of symmetry around the X-axis.

Links

• Paul Tek, Table of n, a(n) for n = 1..20000

Crossrefs

Cf. A252022.

Programs

Haskell

a262604 n = a262604_list !! (n-1)
a262604_list = zipWith (-) (tail a252022_list) a252022_list
-- Reinhard Zumkeller, Sep 27 2015

Formula

a(n) = A252022(n+1) - A252022(n) for any n>0.