%I #8 Sep 11 2014 18:31:03

%S 1,2,3,4,6,7,10,5,15,11,21,16,28,9,36,22,45,29,55,20,66,37,78,8,91,14,

%T 105,46,120,56,136,35,153,13,171,67,190,77,210,79,231,92,253,27,276,

%U 106,300,12,325,104,351,121,378,26,406,170,435,137,465,154,496,65,528,43,561,172,595,209,630,191,666,211,703,54,741,18

%N Inverse of A246273 considered as a permutation of natural numbers.

%H Antti Karttunen, <a href="/A246274/b246274.txt">Table of n, a(n) for n = 1..10001</a>

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%F a(n) = ((x+y)^2 - x - 3y + 2)/2, where x = A246277(n+1) and y = A055396(n+1).

%F As a composition of related permutations:

%F a(n) = A209268(A246675(n)).

%o (Scheme) (define (A246274 n) (let ((x (A246277 (+ 1 n))) (y (A055396 (+ 1 n)))) (* (/ 1 2) (- (expt (+ x y) 2) x y y y -2))))

%Y Inverse: A246273.

%Y Related permutations: A209268, A246675, A246276.

%Y Cf. A055396, A246277.

%K nonn

%O 1,2

%A _Antti Karttunen_, Aug 21 2014