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A082861 Lower triangular region of A082860. 3
0, 1, 1, 2, 2, 2, 3, 3, 6, 3, 4, 4, 4, 14, 4, 5, 5, 5, 15, 11, 5, 6, 6, 6, 6, 14, 15, 6, 7, 7, 16, 7, 42, 43, 16, 7, 8, 8, 19, 8, 51, 52, 19, 20, 8, 9, 9, 9, 37, 9, 28, 37, 121, 149, 9, 10, 10, 10, 38, 10, 29, 38, 122, 150, 25, 10, 11, 11, 11, 39, 11, 11, 39, 123, 151, 28, 29, 11, 12, 12, 12, 40, 30, 12, 40, 124, 152, 84, 85, 30, 12, 13, 13, 13, 41, 33, 13, 41, 125, 153 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..99.

A. Karttunen, Alternative Catalan Orderings (with the complete Scheme source)

PROG

(Scheme-functions showing the essential idea. For the full source, follow the "Alternative Catalan Orderings" link.)

(define (A082861 n) (A080300 (parenthesization->binexp (LCSB (binexp->parenthesization (A014486 (A003056 n))) (binexp->parenthesization (A014486 (A002262 n)))))))

CROSSREFS

Cf. A082859, A003056, A002262.

Sequence in context: A238220 A103600 A267160 * A131704 A124492 A057646

Adjacent sequences:  A082858 A082859 A082860 * A082862 A082863 A082864

KEYWORD

nonn,tabl

AUTHOR

Antti Karttunen May 06 2003

STATUS

approved

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Last modified March 26 13:06 EDT 2019. Contains 321497 sequences. (Running on oeis4.)