A106484 Iterated Stella Octangula numbers A007588.

2, 14, 5474, 328053267374, 70609493887317824553444331216711874, 704075595895578790602913140874091028795793004193695613020210569466609876113017694526357948165550233559374

Offset

0,1

Links

Table of n, a(n) for n=0..5.

Eric Weisstein's World of Mathematics, Stella Octangula Number..

Formula

a(0) = 2; a(n+1) = a(n)*(2*a(n)^2 - 1) = A007588(a(n)).

Crossrefs

Cf. A007588, A106482, A106483.

Sequence in context: A296410 A006266 A284378 * A228342 A027739 A193307

Adjacent sequences: A106481 A106482 A106483 * A106485 A106486 A106487

Keyword

easy,nonn

Author

Jonathan Vos Post, May 03 2005

Status

approved