A253885 - OEIS

%I #6 Jan 18 2015 19:05:29

%S 0,2,4,8,6,14,10,26,24,20,12,44,16,32,34,80,18,74,22,62,54,38,28,134,

%T 48,50,124,98,30,104,36,242,64,56,76,224,40,68,84,188,42,164,46,116,

%U 174,86,52,404,120,146,94,152,58,374,90,296,114,92,60,314,66,110,274,728,118,194,70,170,144,230,72,674,78,122,244,206,142,254,82

%N Permutation of even numbers: a(n) = A003961(n+1) - 1.

%H Antti Karttunen, <a href="/A253885/b253885.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n) = A003961(n+1) - 1.

%F a(n) = A243501(n+1) - 2.

%o (Scheme) (define (A253885 n) (- (A003961 (+ n 1)) 1))

%Y Cf. A003961, A253886, A243501, A246684.

%K nonn

%O 0,2

%A _Antti Karttunen_, Jan 18 2015