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 A225178 The generalized Conway-Guy sequence d_2(n). 1
 1, 2, 6, 16, 48, 140, 408, 1224, 3640, 10824, 32192, 96576, 288912, 864288, 2585584, 7735104, 23205312, 69551552, 208461504, 624806688, 1872691488, 5612903296, 16838709888, 50500659456, 151455567744, 454227600128, 1362265877376 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES Bae, Jaegug; Choi, Sungjin. A generalization of a subset-sum-distinct sequence. J. Korean Math. Soc. 40 (2003), no. 5, 757--768. MR1996839 (2004d:05198). See b(n). LINKS FORMULA Bae and Choi define this sequence via a collection of recurrences. MAPLE b := proc(n)     round(sqrt(2*n-2)) ; end proc: d := proc(k, n)     option remember;     if n = 1 then         1;     else         add( k*procname(k, i), i=n-b(n)..n-1 ) ;     end if; end proc: A225178 := proc(n)     d(2, n) ; end proc: # R. J. Mathar, Jul 09 2013 CROSSREFS Cf. A005318, A005230, A002024. Sequence in context: A064190 A151281 A045694 * A129772 A046721 A230929 Adjacent sequences:  A225175 A225176 A225177 * A225179 A225180 A225181 KEYWORD nonn AUTHOR N. J. A. Sloane, May 02 2013 STATUS approved

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Last modified October 17 14:50 EDT 2018. Contains 316281 sequences. (Running on oeis4.)