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 A030697 Smallest nontrivial extension of n-th cube which is a cube not ending 000. 2
 125, 85184, 2744, 6434856, 1259712, 2161700757, 34328125, 5124031424, 7290099019, 10007873875, 13312053, 172808693, 21975528401, 274498269499, 337589698347, 409675763483, 491355848971, 58320792152, 68593724400375 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Chai Wah Wu, Table of n, a(n) for n = 1..10000 PROG (Python) from gmpy2 import iroot def A030697(n): d, nd = 10, 10*n**3 while True: x = iroot(nd-1, 3)[0]+1 if not x % 10: x += 1 x = x**3 if x < nd+d: return int(x) d *= 10 nd *= 10 # Chai Wah Wu, May 24 2016 CROSSREFS Cf. A030698. Sequence in context: A194654 A222277 A013783 * A265623 A050640 A161354 Adjacent sequences: A030694 A030695 A030696 * A030698 A030699 A030700 KEYWORD nonn,base AUTHOR Patrick De Geest STATUS approved

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Last modified December 4 05:42 EST 2023. Contains 367541 sequences. (Running on oeis4.)