A230287 First differences of A016052/3 (= A230286).

1, 2, 1, 2, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 4, 2, 4, 2, 4, 5, 4, 5, 4, 5, 4, 2, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 7, 5, 4, 5, 4, 5, 7, 8, 4, 5, 4, 5, 7, 8, 4, 5, 7, 5, 7, 5, 4, 5, 7, 8, 7, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 4

Offset

1,2

Comments

This sequence captures the essence of A016052.

Essentially the same as A084228/3.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Index entries for Colombian or self numbers and related sequences

Prog

(Haskell)
a230287 n = a230287_list !! (n-1)
a230287_list = zipWith (-) (tail a230286_list) a230286_list

Crossrefs

Cf. A004207, A016052, A230286, A084228, A065075.

Sequence in context: A359953 A330559 A114228 * A336336 A168580 A356206

Adjacent sequences: A230284 A230285 A230286 * A230288 A230289 A230290

Keyword

nonn,base

Author

Reinhard Zumkeller and N. J. A. Sloane, Oct 16 2013

Status

approved