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 A114641 a(n) = 2^(a(n-2) + log_{2}(a(n-1))), a(1)=1, a(2)=2. 0
 1, 2, 4, 16, 256, 16777216, 1942668892225729070919461906823518906642406839052139521251812409738904285205208498176 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The subsequent terms are too large to include. Apparently a(n) = A000643(n+2) - A000643(n+1). - R. J. Mathar, Apr 22 2007 LINKS FORMULA a(n) = a(n-1) * 2^a(n-2) for n >= 3. - Alois P. Heinz, Jun 28 2021 MATHEMATICA RecurrenceTable[{a[1]==1, a[2]==2, a[n]==2^(a[n-2]+Log[2, a[n-1]])}, a, {n, 6}] (* Harvey P. Dale, Aug 23 2013 *) CROSSREFS Cf. A112237, A112866. Sequence in context: A218148 A112535 A001146 * A152690 A194457 A001128 Adjacent sequences:  A114638 A114639 A114640 * A114642 A114643 A114644 KEYWORD nonn AUTHOR Yasutoshi Kohmoto, Feb 18 2006 EXTENSIONS Definition adapted to offset by Georg Fischer, Jun 18 2021 STATUS approved

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Last modified January 21 03:58 EST 2022. Contains 350473 sequences. (Running on oeis4.)