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A305294 Prime shift towards smaller primes, conjugated by the EKG-permutation: a(n) = A064664(A064989(A064413(n))). 3
1, 1, 1, 2, 2, 3, 2, 1, 5, 5, 4, 3, 10, 10, 9, 2, 1, 5, 14, 14, 13, 8, 4, 6, 11, 10, 20, 20, 19, 3, 1, 28, 28, 27, 9, 33, 33, 32, 7, 5, 14, 37, 37, 36, 2, 6, 20, 8, 10, 24, 18, 4, 15, 21, 11, 43, 43, 42, 13, 57, 57, 56, 3, 1, 28, 61, 61, 60, 12, 19, 33, 5, 67, 67, 66, 17, 9, 25, 14, 74, 74, 73, 7, 29, 34, 6, 37, 81, 81, 80, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16384

Index entries for sequences related to EKG sequence

Index entries for sequences computed from indices in prime factorization

FORMULA

a(n) = A064664(A064989(A064413(n))).

For all n >= 1, a(A305293(n)) = n.

For all n >= 2, a(A064423(n)) = a(A064955(n)) = A064955(n-1).

For all n >= 3, a(1+A064955(n)) = A064423(n-1).

CROSSREFS

Cf. A064413, A064423, A064955, A064664, A064989, A305293.

Sequence in context: A093420 A104897 A185694 * A097510 A237619 A156747

Adjacent sequences:  A305291 A305292 A305293 * A305295 A305296 A305297

KEYWORD

nonn

AUTHOR

Antti Karttunen, May 31 2018

STATUS

approved

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Last modified September 30 05:03 EDT 2020. Contains 337435 sequences. (Running on oeis4.)