A000468 Powers of ten written in base 8.

1, 12, 144, 1750, 23420, 303240, 3641100, 46113200, 575360400, 7346545000, 112402762000, 1351035564000, 16432451210000, 221411634520000, 2657142036440000, 34327724461500000, 434157115760200000, 5432127413542400000, 67405553164731000000, 1053071060221172000000

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base
• easy
• nice

References

• M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 1017.
• N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• T. D. Noe, Table of n, a(n) for n = 0..100
• M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].

Programs

Mathematica

FromDigits/@IntegerDigits[10^Range[0,20],8] (* Harvey P. Dale, Apr 08 2012 *)

PARI

a(n)=fromdigits(digits(10^n,8)) \\ Charles R Greathouse IV, Feb 08 2017

Python

def a(n): return int(oct(10**n)[2:])
print([a(n) for n in range(20)]) # Michael S. Branicky, Jan 12 2021

Extensions

More terms from James Sellers, Jul 05 2000