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Search: id:A127742
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A127742 Triangle read by rows with shape A000041 which refines the Catalan triangle A033184 using sequence A048996. +0
1
1, 1, 1, 2, 2, 1, 5, 4, 1, 3, 1, 14, 10, 4, 6, 3, 4, 1, 42, 28, 10, 4, 15, 12, 1, 8, 6, 5, 1, 132, 84, 28, 20, 42, 30, 12, 6, 20, 24, 4, 10, 10, 6, 1 (list; graph; listen)
OFFSET

1,4

EXAMPLE

The triangle begins

1

1 1

2 2 1

5 4 1 3 1

14 10 4 6 3 4 1

etc

CROSSREFS

Sequence in context: A088333 A016538 A134226 this_sequence A110438 A121460 A105292

Adjacent sequences: A127739 A127740 A127741 this_sequence A127743 A127744 A127745

KEYWORD

nonn,tabf

AUTHOR

Alford Arnold (Alford1940(AT)aol.com), Feb 23 2007

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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