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A152785 a(n)=Floor[(n^2)/Catalan]. 1
0, 1, 4, 9, 17, 27, 39, 53, 69, 88, 109, 132, 157, 184, 213, 245, 279, 315, 353, 394, 436, 481, 528, 577, 628, 682, 738, 795, 855, 918, 982, 1049, 1117, 1188, 1262, 1337, 1414, 1494, 1576, 1660, 1746, 1835, 1925, 2018, 2113, 2210, 2310, 2411, 2515, 2621, 2729 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..51.

MATHEMATICA

a[n_]:=Floor[(n^2)/Catalan];

CROSSREFS

Sequence in context: A009851 A026403 A033604 * A033614 A033609 A033606

Adjacent sequences: A152782 A152783 A152784 * A152786 A152787 A152788

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Dec 12 2008

STATUS

approved

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Last modified December 3 11:24 EST 2022. Contains 358517 sequences. (Running on oeis4.)