1,2

Conjecture: a(n)/a(n-1) tends to sqrt(5); (e.g.: a(10)/a(9) = 2.235294...)

Row sums of A128134

Equals A134315 * [1,2,3,...]. - Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 19 2007

a(4) = 28 = sum of A128134 row 4: (3 + 10 + 11 + 4).

Cf. A128132, A128133, A128134.

Cf. A134315.

Adjacent sequences: A128132 A128133 A128134 this_sequence A128136 A128137 A128138

Sequence in context: A037167 A062431 A034351 this_sequence A027252 A104574 A108912

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 16 2007