A101888 Smallest natural number sequence without any length 5 equidistant arithmetic subsequences.

1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33, 34, 35, 37, 38, 39, 40, 43, 44, 45, 46, 48, 49, 50, 51, 53, 54, 55, 56, 58, 59, 60, 61, 64, 65, 66, 67, 69, 70, 71, 72, 74, 75, 76, 77, 79, 80, 81, 82, 86, 87, 88, 90, 91, 92, 93, 95

Offset: 1

Author

Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 20 2004

Keywords

• nonn

Examples

			5 is out because of 1,2,3,4,5. 21 is out because of 1,6,11,16,21.
		

Crossrefs

Cf. A101889, A101884, A101886.

A selection of sequences related to "no three-term arithmetic progression": A003002, A003003, A003278, A004793, A005047, A005487, A033157, A065825, A092482, A093678, A093679, A093680, A093681, A093682, A094870, A101884, A101886, A101888, A140577, A185256, A208746, A229037.