A291668 - OEIS

A291668

Numbers k such that 0 is the smallest decimal digit of k^4.

7, 8, 10, 12, 15, 18, 19, 20, 25, 29, 30, 32, 35, 38, 40, 43, 44, 45, 48, 49, 50, 51, 53, 54, 55, 57, 60, 65, 67, 70, 75, 77, 78, 79, 80, 81, 85, 86, 90, 93, 94, 95, 99, 100, 101, 102, 103, 105, 107, 108, 110, 111, 113, 114, 115, 116, 119, 120, 125, 126, 127

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..61.

EXAMPLE

7 is in the sequence because 7^4 = 2401, the smallest decimal digit of which is 0.

PROG

(PARI) select(k->vecmin(digits(k^4))==0, vector(500, k, k))

CROSSREFS

Cf. A291669, A291670, A291671, A291672.

Sequence in context: A288783 A341058 A120175 * A175222 A067529 A080113

Adjacent sequences: A291665 A291666 A291667 * A291669 A291670 A291671

KEYWORD

nonn,base

AUTHOR

Colin Barker, Aug 29 2017

STATUS

approved