A298790 Partial sums of A298788.

1, 4, 11, 23, 36, 53, 77, 100, 127, 163, 196, 233, 281, 324, 371, 431, 484, 541, 613, 676, 743, 827, 900, 977, 1073, 1156, 1243, 1351, 1444, 1541, 1661, 1764, 1871, 2003, 2116, 2233, 2377, 2500, 2627, 2783, 2916, 3053, 3221, 3364, 3511, 3691, 3844, 4001, 4193

Offset

0,2

Links

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

Formula

Conjectures from Colin Barker, Jan 29 2018: (Start)

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

a(n) = a(n-1) + 2*a(n-3) - 2*a(n-4) - a(n-6) + a(n-7) for n>6.

(End)

Crossrefs

Cf. A298788.

Sequence in context: A016274 A092656 A269743 * A038435 A038442 A008060

Adjacent sequences: A298787 A298788 A298789 * A298791 A298792 A298793

Keyword

nonn

Author

N. J. A. Sloane, Jan 27 2018

Extensions

More terms from Rémy Sigrist, Jan 28 2018

Status

approved