Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
1,2
A027851(n)+A079173(n)=A001329(n)
Each a(n) is equal to the sum of the elements in row n of A079174.
Table of n, a(n) for n=1..7.
C. van den Bosch, Closed binary operations on small sets
Index entries for sequences related to groupoids
Cf. A027851, A079172, A079174.
Sequence in context: A137841 A204940 A172954 * A073826 A159397 A024074
Adjacent sequences: A079170 A079171 A079172 * A079174 A079175 A079176
nonn
Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
More terms from Christian G. Bower, Nov 26 2003
approved