OFFSET
1,2
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Table[n*(3*n - 1)/2, {n, 0, 10^4}], AllTrue[IntegerDigits[#], EvenQ] &] (* Amiram Eldar, Feb 06 2021 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), May 03 2006
EXTENSIONS
a(1)=0 and a missing term inserted by Amiram Eldar, Feb 06 2021
STATUS
approved