A366261 The least number with the same prime signature as A366260, where A366260 is Doudna sequence permuted by May code.

1, 2, 4, 2, 4, 2, 6, 8, 16, 2, 6, 12, 6, 8, 4, 12, 24, 2, 6, 12, 6, 12, 6, 30, 24, 32, 4, 12, 36, 12, 16, 8, 16, 2, 6, 12, 6, 12, 6, 30, 24, 48, 6, 30, 60, 30, 24, 12, 60, 48, 4, 12, 36, 12, 36, 12, 60, 72, 64, 8, 24, 72, 24, 32, 64, 2, 6, 12, 6, 12, 6, 30, 24, 48, 6, 30, 60, 30, 24, 12, 60, 120, 6, 30, 60, 30, 60

Offset

0,2

Links

Antti Karttunen, Table of n, a(n) for n = 0..16384

Index entries for sequences related to binary expansion of n

Formula

a(n) = A046523(A366260(n)).

a(n) = A278222(A303767(n)).

A001222(a(n)) = A366254(n).

Prog

(PARI)
A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f,
A366261(n) = A046523(A366260(n)); \\ Needs also the program given in A366260.

Crossrefs

Cf. A005940, A046523, A303767, A366260, A366262 (rgs-transform).

Cf. also A278219, A278222.

Sequence in context: A037201 A128886 A031883 * A086152 A194577 A334970

Adjacent sequences: A366258 A366259 A366260 * A366262 A366263 A366264

Keyword

nonn

Author

Antti Karttunen, Oct 05 2023

Status

approved