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A299286 Partial sums of A299285. 51
1, 11, 44, 117, 245, 444, 729, 1117, 1623, 2263, 3052, 4007, 5143, 6476, 8021, 9795, 11813, 14091, 16644, 19489, 22641, 26116, 29929, 34097, 38635, 43559, 48884, 54627, 60803, 67428, 74517, 82087, 90153, 98731, 107836, 117485, 127693, 138476, 149849 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
Conjectures from Colin Barker, Feb 11 2018: (Start)
G.f.: (1 + 8*x + 14*x^2 + 17*x^3 + 14*x^4 + 8*x^5 + x^6) / ((1 - x)^4*(1 + x)*(1 + x^2)).
a(n) = 3*a(n-1) - 3*a(n-2) + a(n-3) + a(n-4) - 3*a(n-5) + 3*a(n-6) - a(n-7) for n>6.
(End)
CROSSREFS
Cf. A299285.
The 28 uniform 3D tilings: cab: A299266, A299267; crs: A299268, A299269; fcu: A005901, A005902; fee: A299259, A299265; flu-e: A299272, A299273; fst: A299258, A299264; hal: A299274, A299275; hcp: A007899, A007202; hex: A005897, A005898; kag: A299256, A299262; lta: A008137, A299276; pcu: A005899, A001845; pcu-i: A299277, A299278; reo: A299279, A299280; reo-e: A299281, A299282; rho: A008137, A299276; sod: A005893, A005894; sve: A299255, A299261; svh: A299283, A299284; svj: A299254, A299260; svk: A010001, A063489; tca: A299285, A299286; tcd: A299287, A299288; tfs: A005899, A001845; tsi: A299289, A299290; ttw: A299257, A299263; ubt: A299291, A299292; bnn: A007899, A007202. See the Proserpio link in A299266 for overview.
Sequence in context: A172526 A111080 A299288 * A022816 A120537 A068596
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 10 2018
STATUS
approved

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Last modified May 6 02:22 EDT 2024. Contains 372290 sequences. (Running on oeis4.)