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A154828 Row sums of a q-Catalan triangle for q=2. 1
1, 2, 8, 52, 548, 9852, 323988, 20589852, 2599737428, 658007495452, 334291709264468, 340646270830877852, 695599447171017236308, 2844303802537519899994652, 23277772627131826189210443348 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums of A154829. Might be considered as q-Schroeder numbers for q=2.

LINKS

Table of n, a(n) for n=0..14.

FORMULA

G.f.: 1/(1-2x/(1-2x/(1-5x/(1-8x/(1-17x/(1-32x/(1-65x/(1-.... (continued fraction).

CROSSREFS

Sequence in context: A305004 A151879 A191552 * A349012 A057629 A191507

Adjacent sequences:  A154825 A154826 A154827 * A154829 A154830 A154831

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jan 15 2009

STATUS

approved

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Last modified January 26 23:54 EST 2022. Contains 350601 sequences. (Running on oeis4.)