This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A017994 Powers of cube root of 7 rounded down. 21
 1, 1, 3, 7, 13, 25, 49, 93, 179, 343, 656, 1255, 2401, 4592, 8785, 16807, 32150, 61501, 117649, 225054, 430513, 823543, 1575381, 3013595, 5764801, 11027667, 21095169, 40353607, 77193673, 147666184, 282475249, 540355712, 1033663291, 1977326743, 3782489985 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 MATHEMATICA Table[Floor[7^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *) Floor[Surd[7, 3]^Range[0, 40]] (* Harvey P. Dale, Apr 05 2019 *) PROG (MAGMA) [Floor(7^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 06 2014 CROSSREFS Cf. powers of cube root of k rounded down: A017979 (k=2), A017982 (k=3), A017985 (k=4), A017988 (k=5), A017991 (k=6), this sequence (k=7), A018000 (k=9), A018003 (k=10), A018006 (k=11), A018009 (k=12), A018012 (k=13), A018015 (k=14), A018018 (k=15),  A018021 (k=16), A018024 (k=17), A018027 (k=18), A018030 (k=19), A018033 (k=20), A018036 (k=21), A018039 (k=22), A018042 (k=23), A018045 (k=24). Sequence in context: A243737 A269832 A201081 * A218199 A275788 A169914 Adjacent sequences:  A017991 A017992 A017993 * A017995 A017996 A017997 KEYWORD nonn AUTHOR EXTENSIONS More terms from Vincenzo Librandi, Jan 06 2014 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.

Last modified August 24 03:51 EDT 2019. Contains 326260 sequences. (Running on oeis4.)