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A307272
Partial sums of A307202.
1
1, 4, 13, 28, 49, 73, 103, 145, 187, 232, 283, 352, 415, 481, 553, 649, 733, 820, 913, 1036, 1141, 1249, 1363, 1513, 1639, 1768, 1903, 2080, 2227, 2377, 2533, 2737, 2905, 3076, 3253, 3484, 3673, 3865, 4063, 4321, 4531, 4744, 4963, 5248, 5479, 5713, 5953, 6265
OFFSET
0,2
COMMENTS
Computed by Davide M. Proserpio using ToposPro, Apr 01 2019
LINKS
FORMULA
Conjectures from Colin Barker, Apr 04 2019: (Start)
G.f.: (1 + 3*x + 9*x^2 + 15*x^3 + 19*x^4 + 18*x^5 + 12*x^6 + 12*x^7 + x^8) / ((1 - x)^3*(1 + x)^2*(1 + x^2)^2).
a(n) = a(n-1) + 2*a(n-4) - 2*a(n-5) - a(n-8) + a(n-9) for n>8.
(End)
CROSSREFS
Cf. A307202.
Sequence in context: A220745 A298017 A356984 * A056107 A155433 A272746
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 02 2019
EXTENSIONS
More terms from Rémy Sigrist, Apr 04 2019
STATUS
approved