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 A000280 a(n) = a(n-1) + a(n-2)^3. 1
 0, 1, 1, 2, 3, 11, 38, 1369, 56241, 2565782650, 177895665388171, 16891164530321501264425013171, 5629840598310484749297545401724540333537382 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS Next term has 85 digits. - Harvey P. Dale, Jun 20 2011 LINKS T. D. Noe, Table of n, a(n) for n = 0..17 FORMULA a(n) ~ c^(3^(n/2)), where c = 1.14457078346212152491547554986213352458144397286642473397... if n is even and c = 1.16698926092791545640507670257893418561351605568060984739... if n is odd. - Vaclav Kotesovec, Feb 26 2016 MAPLE A000280 := proc(n) option remember; if n <= 1 then n else A000280(n-2)^3+A000280(n-1); fi; end; a[ -2]:=0: a[ -1]:=1:a[0]:=1: a[1]:=2: for n from 2 to 10 do a[n]:=a[n-1]+a[n-2]^3 od: seq(a[n], n=-2..10); # Zerinvary Lajos, Mar 19 2009 MATHEMATICA RecurrenceTable[{a[0]==0, a[1]==1, a[n]==a[n-1]+a[n-2]^3}, a, {n, 15}] (* Harvey P. Dale, Jun 20 2011 *) CROSSREFS Cf. A000278. Sequence in context: A088747 A231574 A007756 * A249402 A046224 A081173 Adjacent sequences:  A000277 A000278 A000279 * A000281 A000282 A000283 KEYWORD nonn AUTHOR Stephen J. Greenfield (greenfie(AT)math.rutgers.edu) EXTENSIONS Mathematica program fixed by Vaclav Kotesovec, Feb 26 2016 STATUS approved

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