1,2

Differs from A076031 and A076696.

Table of n, a(n) for n=1..15.

(1) (2 8) (3 4 12) (5 7 10 14) (6 9 15 18 20)

Cf. A076031, A076696.

Sequence in context: A321984 A083486 A076031 * A081967 A076099 A199072

Adjacent sequences: A076593 A076594 A076595 * A076597 A076598 A076599

nonn,tabl,more

Donald S. McDonald, Nov 10 2002

It is not clear to me how one decides what numbers to place in the n-th row. Possibly the goal is to minimize the product of the terms in the n-th row? - N. J. A. Sloane, Nov 30 2002

approved