

A120634


Decimal equivalent of A066335.


2



0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12, 19, 18, 17, 16, 23, 22, 21, 20, 27, 26, 25, 24, 31, 30, 29, 28, 35, 34, 33, 32, 39, 38, 37, 36, 43, 42, 41, 40, 47, 46, 45, 44, 51, 50, 49, 48, 55, 54, 53, 52, 59, 58, 57, 56, 63, 62, 61, 60, 67, 66, 65, 64, 71, 70, 69, 68, 75, 74, 73
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OFFSET

0,2


COMMENTS

The same as A004444 except for first 3 terms.  Pietro Battiston, Jan 19 2008


LINKS

Table of n, a(n) for n=0..71.
Index entries for linear recurrences with constant coefficients, signature (1,0,0,1,1).


FORMULA

From Colin Barker, Oct 06 2014: (Start)
a(n) = (3(1)^n(1i)*((i)^n+i*i^n)+n) where i=sqrt(1).
a(n) = a(n1)+a(n4)a(n5).
G.f.: x*(x^3+x^2+x7) / ((x1)^2*(x+1)*(x^2+1)).
(End)


MATHEMATICA

LinearRecurrence[{1, 0, 0, 1, 1}, {0, 7, 6, 5, 4}, 80] (* Harvey P. Dale, May 10 2015 *)


PROG

(PARI) concat(0, Vec(x*(x^3+x^2+x7)/((x1)^2*(x+1)*(x^2+1)) + O(x^100))) \\ Colin Barker, Oct 06 2014


CROSSREFS

Cf. A004444, A066335.
Sequence in context: A132671 A074921 A182209 * A178753 A104178 A092874
Adjacent sequences: A120631 A120632 A120633 * A120635 A120636 A120637


KEYWORD

base,easy,nonn


AUTHOR

Joshua Zucker, Jun 21 2006


STATUS

approved



