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 A061505 Leading digit of n^n. 5
 1, 1, 4, 2, 2, 3, 4, 8, 1, 3, 1, 2, 8, 3, 1, 4, 1, 8, 3, 1, 1, 5, 3, 2, 1, 8, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 5, 6, 8, 1, 1, 2, 3, 5, 7, 1, 1, 3, 4, 8, 1, 2, 3, 6, 1, 2, 4, 7, 1, 2, 5, 1, 2, 4, 8, 1, 3, 8, 1, 3, 8, 1, 4, 1, 2, 5, 1, 3, 7, 1, 4, 1, 2, 7, 1, 5, 1, 3, 1, 2, 7, 2, 5, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS The sequence equals 2 in the range n = 3628..3730. - Rémy Sigrist, Dec 13 2018 LINKS Rémy Sigrist, Table of n, a(n) for n = 0..10000 FORMULA Using the formula in A000030: a(n) = [n^n / 10^([log_10(n^n)])] = [n^n / 10^([n*log_10(n)])]. EXAMPLE a(7) = 8, as 7^7 = 823543. MATHEMATICA a = {}; Do[ a = Append[ a, IntegerDigits[ n^n ] [ [ 1 ] ] ], {n, 1, 75 } ]; a PROG (PARI) a(n) = digits(n^n)[1] \\ Rémy Sigrist, Dec 13 2018 CROSSREFS Cf. A056849. Sequence in context: A231821 A062072 A140395 * A255708 A197154 A275745 Adjacent sequences:  A061502 A061503 A061504 * A061506 A061507 A061508 KEYWORD base,nonn,easy AUTHOR Amarnath Murthy, May 06 2001 EXTENSIONS More terms from Robert G. Wilson v, May 10 2001 Further terms from Asher Auel (asher.auel(AT)reed.edu), May 20 2001 a(0) = 1 prepended by Rémy Sigrist, Dec 13 2018 STATUS approved

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Last modified October 15 00:14 EDT 2019. Contains 328025 sequences. (Running on oeis4.)