

A171729


Triangle of differences of Fibonacci numbers.


1



1, 1, 2, 1, 2, 3, 2, 3, 4, 5, 3, 5, 6, 7, 8, 5, 8, 10, 11, 12, 13, 8, 13, 16, 18, 19, 20, 21, 13, 21, 26, 29, 31, 32, 33, 34, 21, 34, 42, 47, 50, 52, 53, 54, 55, 34, 55, 68, 76, 81, 84, 86, 87, 88, 89, 55, 89, 110, 123, 131, 136, 139, 141, 142, 143, 144, 89, 144, 178, 199, 212
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OFFSET

1,3


COMMENTS

The numbers missing from this triangle form A050939. Row n of
this triangle has one more term than row n of A143061. Reversing
the rows gives A171730.


LINKS

Table of n, a(n) for n=1..71.


FORMULA

Counting the top row as the 0th row, the nth row is
F(n+1)F(n), F(n+1)F(n1),...,F(n+1)F(2), F(n+1)F(0).


EXAMPLE

First rows:
1
1 2
1 2 3
2 3 4 5
3 5 6 7 8
5 8 10 11 12 13


CROSSREFS

Cf. A000045, A050939, A143061, A171730
Sequence in context: A211990 A162618 A036576 * A356999 A127255 A174832
Adjacent sequences: A171726 A171727 A171728 * A171730 A171731 A171732


KEYWORD

nonn,tabl


AUTHOR

Clark Kimberling, Dec 16 2009


STATUS

approved



