login
A307274
Partial sums of A307204.
1
1, 4, 10, 16, 28, 46, 70, 100, 130, 163, 211, 268, 328, 388, 460, 544, 622, 703, 799, 910, 1006, 1108, 1228, 1366, 1480, 1603, 1747, 1912, 2044, 2188, 2356, 2548, 2698, 2863, 3055, 3274, 3442, 3628, 3844, 4090, 4276, 4483, 4723, 4996, 5200, 5428, 5692, 5992
OFFSET
0,2
COMMENTS
Computed by Davide M. Proserpio using ToposPro, Apr 01 2019
LINKS
FORMULA
Conjectures from Colin Barker, Apr 05 2019: (Start)
G.f.: (1 + 3*x + 6*x^2 + 6*x^3 + 10*x^4 + 12*x^5 + 12*x^6 + 18*x^7 + 7*x^8 + 6*x^10 + 3*x^11 + 12*x^12 + 12*x^13 - 12*x^16 - 6*x^17) / ((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>17.
(End)
CROSSREFS
Cf. A307204.
Sequence in context: A191115 A073121 A167346 * A027430 A298031 A027425
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 02 2019
EXTENSIONS
More terms from Rémy Sigrist, Apr 04 2019
STATUS
approved