A174820 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A174820

Triangle T(n,k) read by rows. T(n,k) = A174557(n,k)-A174557(n-1,k).

1, -3, 1, -1, -2, 1, -1, -1, -2, 1, -1, 0, 0, -2, 1, -1, -1, -1, 0, -2, 1, -1, 0, 0, 0, 0, -2, 1, -1, -1, 0, -1, 0, 0, -2, 1, -1, 0, -1, 0, 0, 0, 0, -2, 1, -1, -1, 0, 0, -1, 0, 0, 0, -2, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, -2, 1, -1, -1, -1, -1, 0, -1, 0, 0, 0, 0, -2, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..88.

EXAMPLE

Table begins:

-3..1

-1.-2..1

-1.-1.-2..1

-1..0..0.-2..1

-1.-1.-1..0.-2..1

-1..0..0..0..0.-2..1

-1.-1..0.-1..0..0.-2..1

-1..0.-1..0..0..0..0.-2..1

-1.-1..0..0.-1..0..0..0.-2..1

CROSSREFS

Sequence in context: A331311 A285770 A370892 * A099501 A089762 A257567

Adjacent sequences: A174817 A174818 A174819 * A174821 A174822 A174823

KEYWORD

sign,tabl

AUTHOR

Mats Granvik, Paul D. Hanna, Mar 30 2010

STATUS

approved