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 A185995 a(n) = 2^(C(2n+2,3)/4). 4
 1, 2, 32, 16384, 1073741824, 36028797018963968, 2475880078570760549798248448, 1393796574908163946345982392040522594123776, 25711008708143844408671393477458601640355247900524685364822016 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Hankel transform of A185994. LINKS G. C. Greubel, Table of n, a(n) for n = 0..20 FORMULA a(n) = Product_{k=0..n} (2^(2k+1))^(n-k). a(n) = 2^A000330(n). a(n) = 2^(1/6*n*(2*n^2+3*n+1)). - Alexander R. Povolotsky, Feb 13 2011 MATHEMATICA Table[2^(1/6*n*(2*n^2 + 3*n + 1)), {n, 0, 25}] (* G. C. Greubel, Feb 20 2017 PROG (PARI) for(n=0, 15, print1(2^(1/6*n*(2*n^2 + 3*n + 1)), ", ")) \\ G. C. Greubel, Feb 20 2017 CROSSREFS Sequence in context: A091804 A012853 A128146 * A012604 A012731 A073402 Adjacent sequences: A185992 A185993 A185994 * A185996 A185997 A185998 KEYWORD nonn,easy AUTHOR Paul Barry, Feb 08 2011 STATUS approved

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Last modified September 29 16:58 EDT 2023. Contains 365773 sequences. (Running on oeis4.)