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Search: id:A106484
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| 2, 14, 5474, 328053267374, 70609493887317824553444331216711874, 70407559589557879060291314087409102879579300419369561302021056946660987611301769\ 4526357948165550233559374
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Stella Octangula Number of Stella Octangula Number of ... Stella Octangula Number of 2, with n steps in the recursion. This iteration need not start with a(0) = 2. See Index for iterated trinagular number, iterated pentaogonal number, ..., iterated tetrahedral number, iterated octahedral number, ... iterated pentatope number and the like.
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LINKS
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Eric Weisstein's World of Mathematics, Stella Octangula Number..
J. V. Post, Table of Polytope Numbers, Sorted, Through 1,000,000
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FORMULA
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a(0) = 2; a(n+1) = a(n)*(2*a(n)^2 - 1) = A007588(a(n)).
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CROSSREFS
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Cf. A007588, A106482, A106483.
Sequence in context: A130421 A156736 A006266 this_sequence A027739 A104773 A128759
Adjacent sequences: A106481 A106482 A106483 this_sequence A106485 A106486 A106487
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), May 03 2005
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