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A000870 Numbers beginning with letter 's' in English. 6

%I #13 Apr 01 2017 00:33:28

%S 6,7,16,17,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,

%T 79,600,601,602,603,604,605,606,607,608,609,610,611,612,613,614,615,

%U 616,617,618,619,620

%N Numbers beginning with letter 's' in English.

%H John Cerkan, <a href="/A000870/b000870.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[10^3], Function[d, Or[And[Mod[IntegerLength@ #, 3] == 2, MemberQ[{16, 17}, FromDigits@ Take[d, 2]]], MemberQ[{6, 7}, First@ d]]]@ IntegerDigits@ # &] (* _Michael De Vlieger_, Feb 13 2017 *)

%Y Subsequence of A125299.

%Y Cf. A000865, A000867, A000873, A000981, A006092.

%K word,nonn

%O 1,1

%A _N. J. A. Sloane_

%E Edited by _John Cerkan_, Feb 13 2017

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)