A328626 - OEIS

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A328626

Inverse permutation to A328625.

9

0, 1, 2, 5, 4, 3, 6, 7, 20, 17, 16, 21, 12, 13, 8, 29, 28, 9, 18, 19, 26, 11, 10, 27, 24, 25, 14, 23, 22, 15, 30, 31, 32, 35, 34, 33, 126, 127, 80, 167, 166, 81, 162, 163, 128, 119, 118, 129, 78, 79, 116, 131, 130, 117, 114, 115, 164, 83, 82, 165, 60, 61, 62, 65, 64, 63, 36, 37, 140, 107, 106, 141, 102, 103, 38, 209, 208, 39, 138, 139, 206, 41, 40

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OFFSET

0,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..30029

Index entries for sequences that are permutations of the natural numbers

Index entries for sequences related to primorial base

FORMULA

a(n) = A276085(A328627(n)).

For all n, A328620(a(n)) = A328620(n).

PROG

(PARI)

A002110(n) = prod(i=1, n, prime(i));

A276085(n) = { my(f = factor(n)); sum(k=1, #f~, f[k, 2]*A002110(primepi(f[k, 1])-1)); };

A328627(n) = { my(m=1, p=2, d=0); while(n, d = lift(Mod(n, p)/(d+1)); m *= (p^d); n = n\p; p = nextprime(1+p)); (m); };

A328626(n) = A276085(A328627(n));

CROSSREFS

Cf. A328625 (inverse permutation).

Cf. A049345, A276085, A328620, A328627, A328629.

Cf. also A289234, A328623.

Sequence in context: A328625 A060125 A265361 * A265357 A265358 A361832

Adjacent sequences: A328623 A328624 A328625 * A328627 A328628 A328629

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 25 2019

STATUS

approved