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Search: id:A152828
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| A152828 |
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Triangle read by rows, A007318 rows repeated three times . |
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+0
10
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 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, 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, 6, 15, 20, 15, 6, 1, 1, 7, 21, 35, 35, 21, 7, 1, 1, 7, 21
(list; graph; listen)
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OFFSET
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0,11
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COMMENT
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Diagonal sums : A079398 . Lengths of row are : 1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,... (A008620) .
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EXAMPLE
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Triangle begins : 1 ; 1 ; 1 ; 1,1 ; 1,1 ; 1,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,3,3,1 ; 1,3,3,1 ; 1,3,3,1 ; 1,4,6,4,1 ; ...
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CROSSREFS
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Cf. A007318, A152198, A152815
Sequence in context: A161110 A161045 A029322 this_sequence A112195 A103956 A103957
Adjacent sequences: A152825 A152826 A152827 this_sequence A152829 A152830 A152831
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KEYWORD
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easy,nonn,tabf
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 13 2008
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