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A316357 Partial sums of A316316. 1
1, 5, 13, 21, 33, 53, 73, 93, 121, 153, 185, 221, 261, 305, 353, 401, 453, 513, 573, 633, 701, 773, 845, 921, 1001, 1085, 1173, 1261, 1353, 1453, 1553, 1653, 1761, 1873, 1985, 2101, 2221, 2345, 2473, 2601, 2733, 2873, 3013, 3153, 3301, 3453, 3605, 3761, 3921 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..48.

FORMULA

Conjectures from Colin Barker, Dec 13 2018: (Start)

G.f.: (1 + 3*x + 5*x^2 + 2*x^3 + 5*x^4 + 3*x^5 + x^6) / ((1 - x)^3*(1 + x^2)*(1 + x + x^2)).

a(n) = 2*a(n-1) - 2*a(n-2) + 3*a(n-3) - 3*a(n-4) + 2*a(n-5) - 2*a(n-6) + a(n-7) for n>6.

(End)

CROSSREFS

Cf. A316316.

Sequence in context: A273453 A299770 A294962 * A252296 A273569 A273750

Adjacent sequences:  A316354 A316355 A316356 * A316358 A316359 A316360

KEYWORD

nonn

AUTHOR

Rémy Sigrist, Jun 30 2018

STATUS

approved

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Last modified December 15 00:30 EST 2019. Contains 329988 sequences. (Running on oeis4.)