A291640 Numbers k such that 1 is the smallest decimal digit of k^3.

1, 5, 6, 8, 11, 12, 13, 17, 21, 23, 24, 25, 26, 27, 28, 31, 39, 41, 44, 45, 49, 51, 53, 54, 55, 56, 57, 58, 61, 64, 68, 71, 75, 81, 82, 83, 85, 88, 91, 97, 98, 104, 105, 108, 111, 113, 114, 119, 121, 122, 125, 129, 136, 137, 139, 146, 147, 148, 151, 153, 156

Offset: 1

Author

Colin Barker, Aug 28 2017

Keywords

• nonn
• base

Examples

			11 is in the sequence because 11^3 = 1331, the smallest decimal digit of which is 1.
		

Crossrefs

Cf. A291639, A291641, A291642, A291643, A291644.

Programs

PARI

select(k->vecmin(digits(k^3))==1, vector(500, k, k))