0,3

Table of n, a(n) for n=0..40.

24531 is in the sequence because (1) it is a hexagonal number and (2)the product of its digits 2*4*5*3*1=120 is also a hexagonal number.

Cf. A000384.

Sequence in context: A081537 A246827 A127726 * A178911 A227027 A001219

Adjacent sequences: A117060 A117061 A117062 * A117064 A117065 A117066

base,nonn

Luc Stevens (lms022(AT)yahoo.com), Apr 16 2006

approved