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A289272 Inverse to A289271. 4
1, 2, 3, 6, 4, 10, 12, 30, 5, 14, 15, 42, 20, 70, 60, 210, 7, 18, 21, 66, 28, 90, 84, 330, 35, 126, 105, 462, 140, 630, 420, 2310, 8, 22, 24, 78, 36, 110, 132, 390, 40, 154, 120, 546, 180, 770, 660, 2730, 56, 198, 168, 858, 252, 990, 924, 4290, 280, 1386, 840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(2^n-1) = A002110(n) for any n >= 0.

a(2^(n-1)) = A000961(n+1) for any n > 0.

A001221(a(n)) = A000120(n) for any n >= 0.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 0..10000

Rémy Sigrist, PARI program for A289272

Index entries for sequences that are permutations of the natural numbers

EXAMPLE

A289271(1) = 0, hence a(0) = 1.

A289271(2) = 1, hence a(1) = 2.

A289271(3) = 2, hence a(2) = 3.

A289271(4) = 4, hence a(4) = 4.

A289271(5) = 8, hence a(8) = 5.

A289271(6) = 3, hence a(3) = 6.

A289271(7) = 16, hence a(16) = 7.

A289271(8) = 32, hence a(32) = 8.

A289271(9) = 64, hence a(64) = 9.

A289271(10) = 5, hence a(5) = 10.

PROG

See Links section.

CROSSREFS

Cf. A000120, A000961, A001221, A002110, A289271.

Sequence in context: A320123 A194357 A165783 * A073318 A254047 A049449

Adjacent sequences:  A289269 A289270 A289271 * A289273 A289274 A289275

KEYWORD

nonn,base,look

AUTHOR

Rémy Sigrist, Jun 30 2017

STATUS

approved

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Last modified November 13 01:32 EST 2018. Contains 317118 sequences. (Running on oeis4.)