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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A025738 Index of 9^n within sequence of numbers of form 8^i*9^j. 0 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 191, 212, 234, 257, 281, 306, 332, 359, 387, 416, 446, 477, 509, 542, 576, 611, 647, 684, 723, 763, 804, 846, 889, 933, 978, 1024, 1071, 1119, 1168, 1218, 1269, 1321, 1374, 1428, 1483, 1540, 1598 (list; graph; refs; listen; history; text; internal format) OFFSET 1,2 LINKS Table of n, a(n) for n=1..55. CROSSREFS Sequence in context: A176659 A109811 A025747 * A078256 A025731 A077367 Adjacent sequences: A025735 A025736 A025737 * A025739 A025740 A025741 KEYWORD nonn AUTHOR David W. Wilson STATUS approved

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Last modified August 18 07:06 EDT 2024. Contains 375255 sequences. (Running on oeis4.)