1,2

A079177(n)+A079180(n)=A001329(n).

Each a(n) is equal to the sum of the elements in row n of A079181.

C. van den Bosch, Closed binary operations on small sets

Index entries for sequences related to semigroups

Index entries for sequences related to groupoids

Cf. A079177, A079179, A079181.

Sequence in context: A155733 A080485 A125149 this_sequence A027735 A085698 A057095

Adjacent sequences: A079177 A079178 A079179 this_sequence A079181 A079182 A079183

nonn

Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003