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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Computed by Davide M. Proserpio using ToposPro, Apr 01 2019

LINKS

Rémy Sigrist, Table of n, a(n) for n = 0..1000

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

Adjacent sequences:  A307269 A307270 A307271 * A307273 A307274 A307275

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 02 2019

EXTENSIONS

More terms from Rémy Sigrist, Apr 04 2019

STATUS

approved

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Last modified October 5 03:25 EDT 2022. Contains 357240 sequences. (Running on oeis4.)