A284517 Periodic with period [1, 4, 3, 4, 1, 6] of length 6.

1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6, 1, 4, 3, 4, 1, 6

Offset

1,2

Links

Table of n, a(n) for n=1..108.

Index entries for linear recurrences with constant coefficients, signature (-1,0,1,1).

Formula

G.f. -x*(1+5*x+7*x^2+6*x^3) / ( (x-1)*(1+x)*(1+x+x^2) ).

a(n+6) = a(n).

a(n) = (24 - ((n mod 6)^5 - 13*(n mod 6)^4 + 61*(n mod 6)^3 - 123*(n mod 6)^2 + 94*(n mod 6)))/4 for n>0. - Luce ETIENNE, Oct 19 2017

Crossrefs

Row 3 of A008307.

Cf. A284518.

Sequence in context: A245727 A280822 A346785 * A286953 A170987 A239735

Adjacent sequences: A284514 A284515 A284516 * A284518 A284519 A284520

Keyword

nonn,easy

Author

R. J. Mathar, Mar 28 2017

Status

approved