A107554 Coordination sequence for B_21 lattice.

1, 882, 140882, 8863106, 302667714, 6594015666, 101214781906, 1171465896066, 10742245956610, 81032397149298, 517808277907410, 2869419888714242, 14053184560509122, 61784095558625202, 247010690902297682, 907815747801312770, 3095275089052965378, 9867488703755519858

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Crossrefs

Sequence in context: A338538 A230909 A035758 * A384335 A089519 A206977

Adjacent sequences: A107551 A107552 A107553 * A107555 A107556 A107557

Keyword

nonn

Author

N. J. A. Sloane, May 29 2005

Status

approved