A177015 -id:A177015 - cp's OEIS frontend

A167873 Period 4: repeat [10, 6, 10, 4].

10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4, 10, 6, 10, 4

Offset: 1

Franz Vrabec, Nov 14 2009

Number of different remainders mod 10 of n-th powers (i.e., number of possible last decimal digits of n-th powers).

Continued fraction expansion of (124+sqrt(16926))/25. - Klaus Brockhaus, May 01 2010

			a(4) = 4 because the possible last decimal digits of 4th powers are 0, 1, 5, 6.

Muniru A Asiru, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (0,0,0,1).

Cf. A177015 (decimal expansion of (124+sqrt(16926))/25). - Klaus Brockhaus, May 01 2010

Flat(List([1..30],n->[10,6,10,4])); # Muniru A Asiru, Oct 06 2018

seq(op([10, 6, 10, 4]), n=0..30); # Wesley Ivan Hurt, Oct 06 2018

PadRight[{},80,{10,6,10,4}] (* Harvey P. Dale, Nov 29 2015 *)

a(n) = 8 - 4*((n+1) mod 2) + 2*ceiling(n/4) - 2*floor(n/4). - Wesley Ivan Hurt, Mar 26 2014

a(n) = 15/2 - (5/2)*cos(n*Pi) - cos(n*Pi/2). - Wesley Ivan Hurt, Oct 05 2018

A177016 Decimal expansion of sqrt(16926).

Original entry on oeis.org

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

Offset: 3

Klaus Brockhaus, May 01 2010

Continued fraction expansion of sqrt(16926) is 130 followed by (repeat 10, 260).

sqrt(16926) = sqrt(2)*sqrt(3)*sqrt(7)*sqrt(13)*sqrt(31).

			sqrt(16926) = 130.09996156801891999550...

Cf. A002193 (decimal expansion of sqrt(2)), A002194 (decimal expansion of sqrt(3)), A010465 (decimal expansion of sqrt(7)), A010470 (decimal expansion of sqrt(13)), A010486 (decimal expansion of sqrt(31)), A177015 (decimal expansion of (124+sqrt(16926))/25).

cp's OEIS Frontend

A167873 Period 4: repeat [10, 6, 10, 4].

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