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Search: id:A026019
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A026019 C(3n,n) - C(3n,n-3). +0
1
1, 3, 15, 83, 483, 2898, 17748, 110295, 692967, 4390815, 28009215, 179652564, 1157534420, 7486680048, 48579667704, 316107403839, 2061920664351, 13478362911825, 88272020923485, 579081767982795, 3804622827123195 (list; graph; listen)
OFFSET

0,2

CROSSREFS

a(n) = T(3n, n), where T is the array defined in A026009.

Sequence in context: A014276 A006964 A052451 this_sequence A118356 A074552 A115910

Adjacent sequences: A026016 A026017 A026018 this_sequence A026020 A026021 A026022

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 17 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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