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 A093833 3^n-Jacobsthal(n). 3
 1, 2, 8, 24, 76, 232, 708, 2144, 6476, 19512, 58708, 176464, 530076, 1591592, 4777508, 14337984, 43024876, 129096472, 387333108, 1162086704, 3486434876, 10459654152, 31379661508, 94140382624, 282423944076, 847277424632 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Binomial transform of A052992. Binomial transform is A093834. Partial sums are A004054. Sums of consecutive pairs yield A053581. Contribution from Johannes W. Meijer, Aug 15 2010: (Start) An elephant sequence, see A175654. For the corner squares four A[5] vectors, with decimal values 343, 349, 373 and 469, lead to this sequence. For the central square these vectors lead to the companion sequence A175659. (End) LINKS Index entries for linear recurrences with constant coefficients, signature (4,-1,-6) FORMULA G.f.: (1-x)^2/((1+x)(1-2x)(1-3x)); a(n)=3^n-2^n/3+(-1)^n/3; a(n)=3^n-A001045(n). CROSSREFS Sequence in context: A066973 A130495 A026070 * A228404 A006952 A327550 Adjacent sequences:  A093830 A093831 A093832 * A093834 A093835 A093836 KEYWORD easy,nonn AUTHOR Paul Barry, Apr 17 2004 STATUS approved

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Last modified June 18 20:45 EDT 2021. Contains 345121 sequences. (Running on oeis4.)