

A130503


a(n) = denominator of the sum of reciprocals of those positive integers which are <= n and are not among the first (n1) terms of A130502.


2



1, 2, 6, 12, 12, 4, 28, 56, 504, 2520, 27720, 27720, 27720, 27720, 5544, 11088, 188496, 62832, 1193808, 5969040, 1989680, 1989680, 45762640, 137287920, 686439600, 8923714800, 80313433200, 80313433200, 2329089562800, 2329089562800
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OFFSET

1,2


LINKS

Diana Mecum, Table of n, a(n) for n = 1..200


EXAMPLE

The positive integers which are <= 9 and are missing from the first 8 terms of the (numerator) sequence A130502 are 2,3,4,6,7,8,9. So a(9) is the denominator of (1/2 +1/3 +1/4 +1/6 +1/7 +1/8 + 1/9 = 821/504).


CROSSREFS

Cf. A130502.
Sequence in context: A009230 A069491 A127698 * A278232 A074385 A057340
Adjacent sequences: A130500 A130501 A130502 * A130504 A130505 A130506


KEYWORD

frac,nonn


AUTHOR

Leroy Quet, May 31 2007


EXTENSIONS

More terms from Diana L. Mecum, Jun 14 2007


STATUS

approved



