A127519 a(n) = numerator of sum{k=1 to n} 1/A127518(k).

1, 4, 35, 187, 247, 1849, 2059, 2227, 789, 7381, 83711, 86021, 1145993, 1171733, 1195757, 2436559, 42142223, 14274301, 275295799, 55835135, 56540567, 19093197, 444316699, 1347822955, 34052522467, 309447273803, 312536252003

Offset

1,2

Comments

Every term is nonprime (1 or composite).

Links

Table of n, a(n) for n=1..27.

Crossrefs

Cf. A127518, A127520.

Sequence in context: A350407 A362346 A005552 * A354855 A128811 A220256

Adjacent sequences: A127516 A127517 A127518 * A127520 A127521 A127522

Keyword

frac,nonn

Author

Leroy Quet, Jan 17 2007

Extensions

Extended by Ray Chandler, Jan 22 2007

Status

approved