A251394 - OEIS

%I #5 Dec 05 2014 09:56:12

%S 1,9,11,13,15,22,23,30,32,34,36,38,40,43,45,51,53,61,62,68,70,72,74,

%T 76,79,87,88,94,96,98,101,103,105,114,116,118,122,124,126,127,132,134,

%U 142,144,146,148,150,153,158,160,166,167,175,177,179,181,185,187

%N Indices of numbers in A098550, that are neither multiples of 2 nor multiples of 3, cf. A007310.

%C GCD(A098550(a(n)),6) = 1.

%H Reinhard Zumkeller, <a href="/A251394/b251394.txt">Table of n, a(n) for n = 1..10000</a>

%o (Haskell)

%o a251394 n = a251394_list !! (n-1)

%o a251394_list = filter ((== 1) . gcd 6 . a098550) [1..]

%Y Cf. A098550, A007310, A020639, A251237, A251393.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Dec 05 2014