A298023 Partial sums of A298022.

1, 4, 11, 23, 40, 63, 91, 124, 161, 203, 250, 301, 357, 418, 483, 553, 628, 707, 791, 880, 973, 1071, 1174, 1281, 1393, 1510, 1631, 1757, 1888, 2023, 2163, 2308, 2457, 2611, 2770, 2933, 3101, 3274, 3451, 3633, 3820, 4011, 4207, 4408, 4613, 4823, 5038, 5257

Offset

0,2

Links

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

Formula

Conjectures from Colin Barker, Jan 22 2018: (Start)

G.f.: (1 + 2*x + 4*x^2 + 4*x^3 + 3*x^4 + 2*x^5 - 2*x^8) / ((1 - x)^3*(1 + x + x^2)).

a(n) = 2*a(n-1) - a(n-2) + a(n-3) - 2*a(n-4) + a(n-5) for n>5.

(End)

Crossrefs

Cf. A298022.

Sequence in context: A225257 A009907 A301159 * A027378 A131177 A092498

Adjacent sequences: A298020 A298021 A298022 * A298024 A298025 A298026

Keyword

nonn

Author

N. J. A. Sloane, Jan 21 2018

Extensions

More terms from Rémy Sigrist, Jan 21 2018

Status

approved