1,2

a(n) = A000010(n) * A002088(n). Equals row sums of triangle A143230.

a(5) = 40 = A000010(5) * A002088(5) = 4 * 10.

a(5) = 40 = sum of row 5 terms of triangle A143230: (4 + 4 + 8 + 8 + 16).

Cf. A000010, A002088, A143230.

Sequence in context: A062290 A078541 A135443 this_sequence A104039 A083546 A013190

Adjacent sequences: A143228 A143229 A143230 this_sequence A143232 A143233 A143234

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 31 2008