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 A110428 a(1) =1, a(2) = 2,Subsequent term are generated like this, if a(m) is the last term available say a(2), then a(m+1) = a(m)*a(m-1),a(m+2) =a(m)*a(m-1)*a(m-2), ...a(2m-1) = a(m)*a(m-1)*a(m-2) ...(a(2)a(1). a(2m) = a(2m-1)*a(2m-2) and so on. 1
 1, 2, 2, 4, 4, 16, 32, 64, 64, 4096, 131072, 2097152, 8388608, 33554432, 67108864, 134217728, 134217728, 18014398509481984, 1208925819614629174706176, 40564819207303340847894502572032, 340282366920938463463374607431768211456 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS By choosing appropriate a(1) and a(2) many such sequences can be generated. LINKS EXAMPLE a(3)= a(2)*a(1) = 2,a(4) = a(3)*a(2) = 4,a(5)=a(3)*a(2)*a(1) = 4, a(6) = a(5)*a(4) = 16,... CROSSREFS Sequence in context: A112869 A086117 A095240 * A076928 A286737 A025557 Adjacent sequences:  A110425 A110426 A110427 * A110429 A110430 A110431 KEYWORD easy,nonn AUTHOR Amarnath Murthy, Aug 01 2005 EXTENSIONS More terms from Joshua Zucker, May 10 2006 STATUS approved

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Last modified January 19 15:53 EST 2019. Contains 319307 sequences. (Running on oeis4.)