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A120148 a(n) = 25 + floor( Sum_{j=1..n-1} a(j)/2 ). 1
25, 37, 56, 84, 126, 189, 283, 425, 637, 956, 1434, 2151, 3226, 4839, 7259, 10888, 16332, 24498, 36747, 55121, 82681, 124022, 186033, 279049, 418574, 627861, 941791, 1412687, 2119030, 3178545, 4767818, 7151727, 10727590, 16091385 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
nxt[{t_, a_}]:=Module[{c=25+Floor[t/2]}, {t+c, c}]; NestList[nxt, {25, 25}, 40][[;; , 2]] (* Harvey P. Dale, May 17 2023 *)
PROG
(SageMath)
@CachedFunction
def A120148(n): return 25 + sum(A120148(k) for k in range(1, n))//2
[A120148(n) for n in range(1, 61)] # G. C. Greubel, May 31 2023
CROSSREFS
Sequence in context: A253025 A127022 A253018 * A038516 A080386 A070758
KEYWORD
nonn
AUTHOR
Graeme McRae, Jun 10 2006
STATUS
approved

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)