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 A182559 a(n) = a(n-2)*2 + floor(sqrt(a(n-1))). 0
 0, 1, 1, 3, 3, 7, 8, 16, 20, 36, 46, 78, 100, 166, 212, 346, 442, 713, 910, 1456, 1858, 2955, 3770, 5971, 7617, 12029, 15343, 24181, 30841, 48537, 61902, 97322, 124115, 194996, 248671, 390490, 497966, 781685, 996816, 1564368, 1994882, 3130148, 3991533, 6262293 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS FORMULA a(0)=0, a(1)=1, a(n) = a(n-2)*2 + floor(sqrt(a(n-1))). PROG (Python) import math prpr = 0 prev = 1 for n in range(55): .  current = prpr*2 + int(math.sqrt(prev)) .  print prpr, .  prpr = prev .  prev = current CROSSREFS Cf. A076677, A076678, A182557. Sequence in context: A320291 A320294 A304179 * A108046 A286110 A116157 Adjacent sequences:  A182556 A182557 A182558 * A182560 A182561 A182562 KEYWORD nonn AUTHOR Alex Ratushnyak, May 05 2012 STATUS approved

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Last modified October 22 23:17 EDT 2018. Contains 316518 sequences. (Running on oeis4.)