OFFSET
1,2
COMMENTS
All numbers of the form n(n+1)*k^2, with n>0, are in the sequence.
MATHEMATICA
Times@@Flatten[IntegerDigits/@#]&/@Partition[Range[0, 70], 2, 1] (* Harvey P. Dale, Apr 22 2018 *)
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Giovanni Teofilatto, May 15 2006
STATUS
approved