The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A120143 a(n) = 17 + floor( (1 + Sum_{j=0..n-1} a(j))/2 ). 3
 17, 26, 39, 58, 87, 131, 196, 294, 441, 662, 993, 1489, 2234, 3351, 5026, 7539, 11309, 16963, 25445, 38167, 57251, 85876, 128814, 193221, 289832, 434748, 652122, 978183, 1467274, 2200911, 3301367, 4952050, 7428075, 11142113, 16713169 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA nxt[{t_, a_}]:=Module[{c=17+Floor[(1+t)/2]}, {t+c, c}]; NestList[nxt, {17, 17}, 60][[All, 2]] (* Harvey P. Dale, Dec 25 2020 *) PROG (SageMath) @CachedFunction def A120143(n): return 17 + (1 +sum(A120143(k) for k in range(1, n)))//2 [A120143(n) for n in range(1, 60)] # G. C. Greubel, May 11 2023 CROSSREFS Cf. A073941, A072493, A112088, A120134 - A120142, A120144 - A120209. Sequence in context: A171169 A316561 A034963 * A031204 A085051 A171954 Adjacent sequences: A120140 A120141 A120142 * A120144 A120145 A120146 KEYWORD nonn AUTHOR Graeme McRae, Jun 10 2006 STATUS approved

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

Last modified June 20 08:48 EDT 2024. Contains 373515 sequences. (Running on oeis4.)