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

1,5

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

Formula

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

Prog

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

Crossrefs

Cf. A252022.

Sequence in context: A131369 A122219 A093348 * A276500 A246060 A316327

Adjacent sequences: A262601 A262602 A262603 * A262605 A262606 A262607

Keyword

sign,look,base

Author

Paul Tek, Sep 26 2015

Status

approved