A280691 a(n) = A015518(A032742(n)) / A015518(A054576(n)).

1, 1, 1, 2, 1, 7, 1, 10, 7, 61, 1, 26, 1, 547, 61, 82, 1, 703, 1, 242, 547, 44287, 1, 730, 61, 398581, 703, 2186, 1, 58807, 1, 6562, 44287, 32285041, 547, 19682, 1, 290565367, 398581, 59050, 1, 4780783, 1, 177146, 58807, 23535794707, 1, 531442, 547, 3472494301, 32285041, 1594322, 1, 387400807, 44287, 4782970, 290565367, 17157594341221, 1, 14348906, 1

Offset

1,4

Comments

A015518 is a divisibility sequence, which guarantees that the result of the division is an integer.

a(n) is a function of A032742(n).

Links

Antti Karttunen, Table of n, a(n) for n = 1..547

Wikipedia, Divisibility sequence

Formula

a(n) = A015518(A032742(n)) / A015518(A054576(n)).

Prog

(Scheme) (define (A280691 n) (/ (A015518 (A032742 n)) (A015518 (A054576 n))))

Crossrefs

Cf. A015518, A032742, A054576.

Cf. also A280689.

Sequence in context: A345301 A160417 A117044 * A092666 A019426 A333599

Adjacent sequences: A280688 A280689 A280690 * A280692 A280693 A280694

Keyword

nonn

Author

Antti Karttunen, Jan 11 2017

Status

approved