A171873 Column sums of triangle A171871

1, 1, 2, 10, 280, 1173468

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