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A061252 a(n) = 16^n - 15^n. 0
0, 1, 31, 721, 14911, 289201, 5386591, 97576081, 1732076671, 30276117361, 522861237151, 8942430185041, 151728638820031, 2557404559011121, 42864668012537311, 715027614225987601, 11878335717996660991 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

FORMULA

a(0)=0, a(n) = 15*a(n-1) + 16^(n-1). - Vincenzo Librandi, Feb 09 2011

a(0)=0, a(1)=1, a(n) = 31*a(n-1) - 240*a(n-2). - Vincenzo Librandi, Feb 09 2011

a(n) = A001025(n) - A001024(n). - Michel Marcus, Aug 26 2013

PROG

(PARI) a(n) = 16^n - 15^n; \\ Michel Marcus, Aug 26 2013

CROSSREFS

base 8: A016177, 4: A005061, 2: A000225, 10: A016189.

Sequence in context: A000565 A014930 A196988 * A096049 A166488 A051587

Adjacent sequences:  A061249 A061250 A061251 * A061253 A061254 A061255

KEYWORD

nonn,easy

AUTHOR

Frank Ellermann, Jun 05 2001

STATUS

approved

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Last modified September 18 20:19 EDT 2020. Contains 337173 sequences. (Running on oeis4.)