A000870 Numbers beginning with letter 's' in English.

6, 7, 16, 17, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620

Offset

1,1

Links

John Cerkan, Table of n, a(n) for n = 1..10000

Mathematica

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 *)

Crossrefs

Subsequence of A125299.

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

Sequence in context: A315843 A261195 A008538 * A315844 A308903 A315845

Adjacent sequences: A000867 A000868 A000869 * A000871 A000872 A000873

Keyword

word,nonn

Author

N. J. A. Sloane

Extensions

Edited by John Cerkan, Feb 13 2017

Status

approved