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A050620 Quotients arising from sequence A035014. 3
2, 11, 43, 209, 1042, 6771, 26823, 130599, 651237, 3255306, 21158903, 83821639, 408121757, 2035115566, 13224589033, 52388661704, 331370112102, 1691563962301, 6567827879588, 41430886596044, 211450306579272, 1059399469695886, 5298071316879193, 20530429091056784 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Ray Chandler, Table of n, a(n) for n = 1..1431 (terms < 10^1000, first 1000 terms from Alois P. Heinz)

FORMULA

a(n) = a(n-1)/2 + 5^(n-1)*(4-[a(n-1) mod 2])/2. - Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Jun 17 2001

a(n) = A035014(n)/2^n. - Michel Marcus, Apr 07 2017

PROG

(PARI) a(n) = if (n==1, 2, a(n-1)/2 + 5^(n-1)*(4-(a(n-1) % 2))/2);

CROSSREFS

Cf. A023402, A035014.

Sequence in context: A141190 A048500 A197189 * A027253 A241712 A066058

Adjacent sequences:  A050617 A050618 A050619 * A050621 A050622 A050623

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1999

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Jun 17 2001

More terms from Michel Marcus, Apr 07 2017

STATUS

approved

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Last modified September 24 10:18 EDT 2020. Contains 337317 sequences. (Running on oeis4.)