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A238434 Expansion of G(1) where G(k) = 1 + q^k / ( 1 - q^k * G(k+2) ). 0
1, 1, 1, 1, 1, 2, 3, 4, 6, 9, 13, 19, 28, 42, 62, 91, 135, 200, 296, 438, 648, 960, 1421, 2103, 3114, 4611, 6827, 10107, 14964, 22157, 32806, 48572, 71917, 106483, 157661, 233436, 345632, 511755, 757720, 1121901, 1661122, 2459512, 3641632, 5391915, 7983443, 11820547, 17501885, 25913856, 38368900, 56810249 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

COMMENTS

What does this sequence count?

LINKS

Table of n, a(n) for n=0..49.

PROG

(PARI)

N = 66;  q = 'q + O('q^N);

G(k) = if(k>N, 1, 1 + q^k / ( 1 - q^k * G(k+2) ) );

Vec( G(1) )

CROSSREFS

Cf. A186085: G(1) where G(k) = 1 + q^k/( 1 - q^k * G(k+1) ).

Sequence in context: A199804 A101913 A121653 * A061418 A136423 A215245

Adjacent sequences:  A238431 A238432 A238433 * A238435 A238436 A238437

KEYWORD

nonn

AUTHOR

Joerg Arndt, Feb 27 2014

STATUS

approved

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Last modified October 27 21:22 EDT 2020. Contains 338036 sequences. (Running on oeis4.)