A151982 Arrangement of Fibonacci-numbers in a centered triangular fashion, such that every number is the difference and/or sum of adjacent numbers.

1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13

Offset

1,5

Links

Table of n, a(n) for n=1..64.

Example

............5
.........5.3.
......5.3.2.5
...5.3.2.1.3.
5.3.2.1.1.2.5
...5.3.2.1.3.
......5.3.2.5
.........5.3.
............5

Crossrefs

Cf. A131410.

Sequence in context: A286103 A056556 A111651 * A259361 A111854 A132085

Adjacent sequences: A151979 A151980 A151981 * A151983 A151984 A151985

Keyword

nonn

Author

Mark Dols, Jul 21 2009

Status

approved