A245452 - OEIS

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A245452

Self-inverse permutation of nonnegative integers, A075158-conjugate of the inverse of gray code: a(n) = 1 + A075157(A006068(A075158(n-1))).

4

1, 2, 4, 3, 9, 8, 18, 5, 6, 25, 75, 16, 150, 36, 27, 7, 735, 12, 1470, 49, 50, 245, 12705, 32, 15, 300, 10, 72, 25410, 125, 195195, 11, 225, 4235, 54, 24, 390390, 2940, 490, 121, 4339335, 100, 8678670, 847, 81, 65065, 92147055, 64, 30, 35, 2205, 600, 184294110, 20, 147, 144, 8470, 50820, 2565568005, 343, 5131136010, 1446445, 98, 13

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OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..1024

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(n) = 1 + A075157(A006068(A075158(n-1))).

PROG

(Scheme) (define (A245452 n) (+ 1 (A075157 (A006068 (A075158 (- n 1))))))

CROSSREFS

Inverse: A245451.

Cf. A006068, A075157, A075158.

Similar permutations: A245454, A122111, A241909, A241916.

Sequence in context: A243353 A182194 A060837 * A019600 A096901 A285268

Adjacent sequences: A245449 A245450 A245451 * A245453 A245454 A245455

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 22 2014

STATUS

approved