1,2
Table of n, a(n) for n=1..7.
The following triangle of 4 rows satisfies the requirements:
....1
...3 2
..4 5 8
.6 7 9 10
a(n)=6*A064050(n) for n>1.
Sequence in context: A225827 A200904 A038033 * A018981 A052594 A277985
Adjacent sequences: A064046 A064047 A064048 * A064050 A064051 A064052
more,nonn
Floor van Lamoen, Aug 24 2001
a(7) from Lars Blomberg, Apr 11 2012
approved
