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A099186
a(0) = 1, a(1) = 12, a(n+1) = A006564(a(n)).
1
1, 12, 3972, 156624027132, 9605393649115032262909140007773492, 2215570185245038872814956021479696635481690776469126111743280383568619886232750745465064720338596867052
OFFSET
0,2
LINKS
H. K. Kim, On Regular Polytope Numbers, Proc. Amer. Math. Soc. 131 (2003), 65-75. MR 1929024
EXAMPLE
a(2) = A006564(a(1)) = A006564(12) = 12*(5*12^2 - 5*12 + 2)/2 = 3972.
CROSSREFS
Sequence in context: A012609 A159395 A272093 * A307944 A105067 A096732
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Nov 15 2004
EXTENSIONS
Definition and comments condensed by R. J. Mathar, Sep 09 2009
STATUS
approved