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A171873
Column sums of triangle
A171871
1
1, 1, 2, 10, 280, 1173468
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OFFSET
0,3
COMMENTS
Next term is known to be greater than 220146725295227, based on link between
A171871
and
A039754
.
LINKS
Table of n, a(n) for n=0..5.
R. Munafo,
Classifications of N Elements
CROSSREFS
Sequence in context:
A260231
A003047
A028580
*
A098706
A143249
A161181
Adjacent sequences:
A171870
A171871
A171872
*
A171874
A171875
A171876
KEYWORD
nonn
AUTHOR
Robert Munafo
, Jan 21 2010
STATUS
approved
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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)