

A263043


a(n)=n for n = 1..5; for n>=6, a(n) = a(n5)*a(n3)*a(n1)  a(n4)*a(n2).


0



1, 2, 3, 4, 5, 7, 41, 587, 16231, 3323246, 13654552343, 9086706651503151, 17725851219520961162682469, 3928527920941441960398255684700870518131, 118631177920294161985904111240557003105520588984802122222460259
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..15.


PROG

(PARI) a(n) = if(n<6, n, a(n5)*a(n3)*a(n1)a(n4)*a(n2));
vector(20, n, a(n)) \\ Altug Alkan, Oct 08 2015
(MAGMA) [n le 5 select n else Self(n5)*Self(n3)*Self(n1)Self(n4)*Self(n2): n in [1..20]]; // Vincenzo Librandi, Oct 09 2015


CROSSREFS

Sequence in context: A278342 A276522 A135709 * A028980 A183108 A096841
Adjacent sequences: A263040 A263041 A263042 * A263044 A263045 A263046


KEYWORD

nonn


AUTHOR

Gianmarco Giordano, Oct 08 2015


EXTENSIONS

More terms from Altug Alkan, Oct 08 2015


STATUS

approved



