A241418 First differences of Arshon's sequence, cf. A099054.

1, 1, -2, 2, -1, 1, -2, 1, 1, -1, -1, 2, -2, 1, -1, 2, -1, 1, -2, 1, 1, -1, -1, 1, 1, -2, 1, -1, 2, -1, 1, -2, 2, -1, -1, 2, -2, 1, 1, -1, -1, 1, 1, -2, 2, -1, -1, 2, -2, 1, -1, 2, -1, 1, -2, 1, 1, -1, -1, 1, 1, -2, 1, -1, 2, -1, 1, -2, 2, -1, -1, 1, 1, -2

Offset

0,3

Comments

Also first differences of A219762;

a(n) = A099054(n+1) - A099054(n) = A219762(n+2) - A219762(n+1).

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Prog

(Haskell)
a241418 n = a241418_list !! n
a241418_list = zipWith (-) (tail a099054_list) a099054_list

Crossrefs

Cf. A099054, A219762.

Sequence in context: A327818 A255481 A376604 * A330348 A117229 A264119

Adjacent sequences: A241415 A241416 A241417 * A241419 A241420 A241421

Keyword

sign

Author

Reinhard Zumkeller, Aug 08 2014

Status

approved