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A156629
Column 4 of square array
A156628
.
2
1, 5, 28, 181, 1333, 11029, 101351, 1024949, 11320359, 135679037, 1754890039, 24375607333, 362034474975, 5727314152237, 96171016597079, 1708678290956405, 32029999992261615, 631834430396575613, 13084795597366612231
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..18.
CROSSREFS
Sequence in context:
A324352
A006157
A179326
*
A331797
A123776
A070779
Adjacent sequences:
A156626
A156627
A156628
*
A156630
A156631
A156632
KEYWORD
nonn
AUTHOR
Paul D. Hanna
, Feb 17 2009
EXTENSIONS
More terms from
Paul D. Hanna
, Feb 20 2009
STATUS
approved
