A362871 Leading digit of 6^n.

1, 6, 3, 2, 1, 7, 4, 2, 1, 1, 6, 3, 2, 1, 7, 4, 2, 1, 1, 6, 3, 2, 1, 7, 4, 2, 1, 1, 6, 3, 2, 1, 7, 4, 2, 1, 1, 6, 3, 2, 1, 8, 4, 2, 1, 1, 6, 3, 2, 1, 8, 4, 2, 1, 1, 6, 3, 2, 1, 8, 4, 2, 1, 1, 6, 3, 2, 1, 8, 4, 2, 1, 1, 6, 3, 2, 1, 8, 4, 2, 1, 1, 6, 3, 2, 1, 8, 5, 3, 1, 1, 6, 3, 2, 1, 8, 5, 3, 1, 1, 6

Offset

0,2

Links

Table of n, a(n) for n=0..100.

Formula

a(n) = A000030(A000400(n)).

Mathematica

a[n_] := IntegerDigits[6^n][[1]]; Array[a, 100, 0] (* Amiram Eldar, Jul 15 2023 *)

Prog

(PARI) a(n) = digits(6^n)[1];

Crossrefs

Cf. A008952, A060956, A111395, A363093, A363249, A364185.

Cf. A000030, A000400, A008567.

Sequence in context: A277435 A033326 A068996 * A068924 A106224 A254571

Adjacent sequences: A362868 A362869 A362870 * A362872 A362873 A362874

Keyword

nonn,base,easy

Author

Seiichi Manyama, Jul 15 2023

Status

approved