1,2

Also structured deltoidal hexacontahedral numbers (vertex structure 11) (Cf. A100166, A100159 = alternate vertices).

a(n)=(1/6)*(110*n^3-150*n^2+46*n)

Cf. A100159, A100160 = alternate vertices; A100145 for more on structured polyhedral numbers.

Sequence in context: A100423 A158067 A045220 this_sequence A100166 A100159 A100160

Adjacent sequences: A100155 A100156 A100157 this_sequence A100159 A100160 A100161

easy,nonn

James A. Record (james.record(AT)gmail.com). Nov 07, 2004.