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A152830 Triangle read by rows, A007318 rows repeated four times . +0
9
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 5, 10, 10, 5, 1, 1, 5, 10, 10, 5, 1, 1, 5, 10, 10, 5, 1, 1, 5, 10, 10, 5, 1, 1, 6, 15, 20, 15, 6, 1, 1, 6, 15, 20, 15, 6, 1, 1 (list; graph; listen)
OFFSET

0,14

COMMENT

Diagonal sums : A103372 .

EXAMPLE

Triangle begins : 1 ; 1 ; 1 ; 1 ; 1,1 ; 1,1 ; 1,1 ; 1,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,3,3,1 ; ...

CROSSREFS

Cf. A007318, A152198, A152815, A152828.

Sequence in context: A161074 A161113 A161048 this_sequence A161073 A161112 A161047

Adjacent sequences: A152827 A152828 A152829 this_sequence A152831 A152832 A152833

KEYWORD

easy,nonn,tabf

AUTHOR

Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 13 2008

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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