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A098359 Multiplication table of the square numbers read by antidiagonals. 4
1, 4, 4, 9, 16, 9, 16, 36, 36, 16, 25, 64, 81, 64, 25, 36, 100, 144, 144, 100, 36, 49, 144, 225, 256, 225, 144, 49, 64, 196, 324, 400, 400, 324, 196, 64, 81, 256, 441, 576, 625, 576, 441, 256, 81, 100, 324, 576, 784, 900, 900, 784, 576, 324, 100, 121, 400, 729 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

sum_{k=0..2n-2} (-1)^k*a(A000124(2n-2)+k-1) = n. See A003991. - Charlie Marion, Apr 22 2013

LINKS

Table of n, a(n) for n=0..57.

FORMULA

G.f.: [xy(1+x)(1+y)] / [(1-x)^3 * (1-y)^3 ]. - Ralf Stephan, Oct 27 2004

EXAMPLE

1; 4,4; 9,16,9; 16,36,36,16; ...

CROSSREFS

Cf. A003991, A098358, A098360, A098361.

Sequence in context: A284628 A262811 A294749 * A319435 A226096 A071567

Adjacent sequences:  A098356 A098357 A098358 * A098360 A098361 A098362

KEYWORD

nonn,tabl

AUTHOR

Douglas Stones (dssto1(AT)student.monash.edu.au), Sep 04 2004

STATUS

approved

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Last modified October 20 20:24 EDT 2019. Contains 328273 sequences. (Running on oeis4.)