A284924 a(n) is the least n-digit multiple of 5^n using the decimal digits {5, 6, 7, 8, 9} exclusively.

5, 75, 875, 6875, 96875, 796875, 6796875, 66796875, 966796875, 5966796875, 65966796875, 865966796875, 8865966796875, 68865966796875, 868865966796875, 8868865966796875, 78868865966796875, 578868865966796875, 7578868865966796875, 87578868865966796875

Offset

1,1

Links

Alois P. Heinz, Table of n, a(n) for n = 1..1000

Example

a(2) = 75 because 75 is divisible by 5^2 (25*3=75) and uses only digits in the 5-9 interval.

Crossrefs

Cf. A140288, A035014, A053312.

Sequence in context: A307823 A105494 A030986 * A248340 A224088 A219462

Adjacent sequences: A284921 A284922 A284923 * A284925 A284926 A284927

Keyword

nonn,base

Author

J. Lowell, Apr 05 2017

Extensions

More terms from Alois P. Heinz, Apr 06 2017

Status

approved