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A280713 Partial sums of A055067 where A055067(n) is the product of non-divisors of n. 1
1, 2, 4, 7, 31, 51, 771, 1401, 14841, 51129, 3679929, 3957129, 482958729, 927745929, 6739632009, 27172044009, 20949961932009, 22047762636009, 6424421468364009, 6728534219386089, 122581010799226089, 2444896564058746089, 1126445624341666426089 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A055067(n) = the product of non-divisors of n.

LINKS

Table of n, a(n) for n=1..23.

FORMULA

a(n) = Sum_{i=1..n} A055067(i).

PROG

(MAGMA) [&+[Factorial(k) / &*[d: d in Divisors(k): k in [1..n]]: n in [1..100]]

CROSSREFS

Cf. A055067, A280714.

Sequence in context: A102123 A102125 A102124 * A233868 A295125 A082537

Adjacent sequences:  A280710 A280711 A280712 * A280714 A280715 A280716

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Jan 07 2017

STATUS

approved

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Last modified August 14 13:10 EDT 2020. Contains 336480 sequences. (Running on oeis4.)