A236916 - OEIS

A236916

The first "octad" is 0, 1, 2, 2, 2, 2, 3, 3; thereafter add 4 to get the next octad.

0, 1, 2, 2, 2, 2, 3, 3, 4, 5, 6, 6, 6, 6, 7, 7, 8, 9, 10, 10, 10, 10, 11, 11, 12, 13, 14, 14, 14, 14, 15, 15, 16, 17, 18, 18, 18, 18, 19, 19, 20, 21, 22, 22, 22, 22, 23, 23, 24, 25, 26, 26, 26, 26, 27, 27, 28, 29, 30, 30, 30, 30, 31, 31, 32, 33, 34, 34, 34, 34, 35, 35, 36, 37, 38, 38, 38, 38, 39, 39, 40, 41, 42, 42

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..83.

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

FORMULA

G.f.: (x+x^2+x^6+x^8)/((1-x)*(1-x^8)). - Robert Israel, Jun 09 2020

MATHEMATICA

Flatten[NestList[4+#&, {0, 1, 2, 2, 2, 2, 3, 3}, 10]] (* Harvey P. Dale, Oct 19 2015 *)

CROSSREFS

Cf. A236680. A034583 is a very similar sequence.