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A119687 f-Pascal's triangle where f(n) = n^2 = A000290(n). 1
1, 1, 1, 1, 2, 1, 1, 5, 5, 1, 1, 26, 26, 1, 1, 677, 3176, 3176, 677, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..19.

FORMULA

T(n, k)=T(n-1, k-1)^2 + T(n-1, k)^2 ; T(0,0)=1 ; T(n,-1):=0 ; T(n, k):=0, n<k.

EXAMPLE

Triangle begins:

1;

1, 1;

1, 2, 1;

1, 5, 5, 1;

1, 26, 50, 26, 1;

1, 677, 3176, 3176, 677, 1;

CROSSREFS

Cf. A007318.

Sequence in context: A060854 A091378 A156045 * A086856 A052916 A156576

Adjacent sequences:  A119684 A119685 A119686 * A119688 A119689 A119690

KEYWORD

nonn,tabl

AUTHOR

Philippe Deléham, Jun 09 2006

STATUS

approved

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Last modified April 20 02:04 EDT 2014. Contains 240777 sequences.