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A091772 a(n) = gcd(A000108(n), A000110(n)). 1
1, 2, 5, 1, 2, 1, 1, 10, 1, 1, 2, 1, 1, 2, 5, 1, 6, 7, 1, 4, 3, 3, 2, 3, 37, 34, 47, 5, 68, 53, 11, 2, 1, 39, 14, 1, 1, 2, 1, 1, 4, 1, 77745, 4, 5, 5, 126, 51, 1, 6, 1, 1, 44, 1, 1, 12, 31, 1, 2, 3, 663, 46, 51, 5, 2, 41, 1, 4, 3, 5, 29318, 445, 3, 6, 1, 39, 4, 5, 31, 4, 5, 23, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

Table[GCD[CatalanNumber[n], BellB[n]], {n, 1, 84}] (* Amiram Eldar, Nov 23 2019 *)

CROSSREFS

Cf. A000108 (Catalan numbers), A000110 (Bell Numbers).

Sequence in context: A197737 A189824 A197814 * A275479 A075790 A240543

Adjacent sequences:  A091769 A091770 A091771 * A091773 A091774 A091775

KEYWORD

nonn

AUTHOR

Jon Perry, Mar 06 2004

STATUS

approved

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Last modified September 28 02:28 EDT 2020. Contains 337392 sequences. (Running on oeis4.)