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A220656 The positions of those permutations in A030298 where the first element is not fixed. 5

%I #7 Dec 18 2012 15:37:10

%S 3,6,7,8,9,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,58,

%T 59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,

%U 82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100

%N The positions of those permutations in A030298 where the first element is not fixed.

%C Correspondingly, gives the positions of those terms in A030299 whose first digit is not 1, as long as the decimal encoding system employed is valid.

%H Antti Karttunen, <a href="/A220656/b220656.txt">Table of n, a(n) for n = 1..5039</a>

%F a(n) = A003422(1+A084558(n)) + A000142(A084558(n)) + A212598(n).

%F a(n) = A220655(n)+1.

%o (Scheme): (define (A220656 n) (+ (A003422 (+ 1 (A084558 n))) (A000142 (A084558 n)) (A212598 n)))

%Y Complement: A220696. Cf. A081291.

%K nonn

%O 1,1

%A _Antti Karttunen_, Dec 17 2012

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Last modified April 24 15:57 EDT 2024. Contains 371961 sequences. (Running on oeis4.)