A118944 n-th (starting from the right) decimal digit of 11^n.

1, 2, 3, 4, 6, 7, 9, 1, 3, 5, 8, 1, 4, 7, 1, 5, 0, 5, 1, 7, 4, 1, 9, 8, 8, 9, 1, 4, 8, 4, 1, 1, 2, 5, 1, 9, 0, 4, 1, 2, 7, 7, 2, 2, 8, 1, 1, 0, 7, 3, 1, 0, 2, 8, 0, 9, 7, 6, 8, 4, 9, 4, 2, 7, 3, 4, 3, 6, 9, 7, 7, 5, 1, 2, 8, 0, 9, 8, 1, 4, 2, 5, 4, 0, 9, 8, 7, 9, 0, 0, 3, 7, 6, 7, 6, 3, 5, 9, 8

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..10000

Formula

a(n) = floor(11^n / 10^(n-1)) mod 10. - Andrew Howroyd, Feb 11 2018

Mathematica

Table[IntegerDigits[11^n][[ -n]], {n, 99}]
Table[NumberDigit[11^n, n-1], {n, 100}] (* Harvey P. Dale, Mar 22 2024 *)

Prog

(PARI) a(n) = 11^n \ 10^(n-1) % 10; \\ Andrew Howroyd, Feb 11 2018

Crossrefs

Cf. A118943, A118945, A118946, A118947, A118948.

Sequence in context: A135604 A345437 A084826 * A132988 A363997 A342760

Adjacent sequences: A118941 A118942 A118943 * A118945 A118946 A118947

Keyword

base,nonn

Author

Zak Seidov, May 06 2006

Status

approved