A276622 - OEIS

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A276622

Simple self-inverse permutation of natural numbers: after a(0)=0, list each block of A261234(n) numbers in reverse order, from A261232(n) to A261233(1+n).

3

0, 1, 3, 2, 8, 7, 6, 5, 4, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 123, 122, 121, 120, 119, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109, 108, 107, 106, 105, 104, 103, 102, 101, 100, 99, 98, 97, 96

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OFFSET

0,3

COMMENTS

Maps between A276623 and A276624.

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..6250

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(0) = 0; for n >= 1, a(n) = A261232(A276621(n)-1) + A261232(A276621(n)) - n - 1.

PROG

(Scheme) (define (A276622 n) (if (zero? n) n (+ (A261232 (+ -1 (A276621 n))) (- (A261232 (A276621 n)) n 1))))

CROSSREFS

Cf. A261232, A276621, A276623, A276624.

Sequence in context: A086425 A122354 A131160 * A129604 A130359 A122340

Adjacent sequences: A276619 A276620 A276621 * A276623 A276624 A276625

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Sep 11 2016

STATUS

approved