login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067495 Powers of 9 having initial digit 1. 1
1, 1853020188851841, 16677181699666569, 150094635296999121, 1350851717672992089, 12157665459056928801, 109418989131512359209, 1824800363140073127359051977856583921, 16423203268260658146231467800709255289, 147808829414345923316083210206383297601 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Muniru A Asiru, Table of n, a(n) for n = 1..250

MAPLE

select(x-> "1"=""||x[1], [9^n$n=0..60])[];  # Alois P. Heinz, Oct 22 2018

MATHEMATICA

Select[9^Range[0, 50], First[IntegerDigits[#]]==1&] (* Harvey P. Dale, Oct 01 2015 *)

PROG

(GAP) Filtered(List([0..40], n->9^n), i->ListOfDigits(i)[1]=1); # Muniru A Asiru, Oct 22 2018

CROSSREFS

Cf. A067480, A067481, A067482, A067483, A067484, A067485, A067486, A067487, A067488, A067489, A067490, A067491, A067492, A067493, A067494.

Sequence in context: A288279 A318170 A204419 * A216910 A309111 A047698

Adjacent sequences:  A067492 A067493 A067494 * A067496 A067497 A067498

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Feb 09 2002

EXTENSIONS

More terms from Harvey P. Dale, Oct 01 2015

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 6 14:15 EST 2019. Contains 329806 sequences. (Running on oeis4.)