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 A348228 Partial sums of A348227. 2
 1, 5, 17, 37, 71, 109, 163, 217, 291, 361, 455, 541, 655, 757, 891, 1009, 1163, 1297, 1471, 1621, 1815, 1981, 2195, 2377, 2611, 2809, 3063, 3277, 3551, 3781, 4075, 4321, 4635, 4897, 5231, 5509, 5863, 6157, 6531, 6841, 7235, 7561, 7975, 8317, 8751, 9109, 9563, 9937, 10411 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..10000 FORMULA See A348227 for G.f. MATHEMATICA A348228list[nmax_]:=Accumulate[PadRight[{1, 4, 12, 20}, nmax+1, Array[9#+(#-2)(-1)^#-4&, nmax+1, 0]]]; A348228list[100] (* Paolo Xausa, Aug 06 2023 *) CROSSREFS Cf. A348227. Sequence in context: A162373 A146781 A338277 * A107199 A048209 A181423 Adjacent sequences: A348225 A348226 A348227 * A348229 A348230 A348231 KEYWORD nonn AUTHOR N. J. A. Sloane, Oct 08 2021 STATUS approved

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Last modified December 9 23:44 EST 2023. Contains 367696 sequences. (Running on oeis4.)