1,3

Table of n, a(n) for n=1..7.

Cf. A002105, A117513, A117515.

Sequence in context: A052635 A259270 A168562 * A138437 A265452 A121429

Adjacent sequences: A117511 A117512 A117513 * A117515 A117516 A117517

nonn

Nan Zang (nzang(AT)cs.ucsd.edu), Apr 28 2006

approved