A136695 -id:A136695 - cp's OEIS frontend

A136702 Final nonzero digit of n! in base 16.

1, 1, 2, 6, 8, 8, 13, 11, 8, 8, 15, 5, 12, 12, 8, 8, 8, 8, 3, 9, 4, 4, 8, 8, 12, 12, 8, 8, 14, 6, 4, 12, 8, 8, 11, 1, 4, 4, 8, 8, 4, 4, 8, 8, 2, 10, 12, 4, 12, 12, 8, 8, 2, 10, 12, 4, 14, 14, 12, 4, 7, 11, 10, 6, 8, 8, 11, 1, 4, 4, 8, 8, 4, 4, 8, 8, 10, 2, 12, 4, 4, 4, 8, 8, 6, 14, 4, 12, 2, 2, 4, 12

Offset: 0

Carl R. White, Jan 16 2008

			6! = 720 decimal = 2D0 hexadecimal, so a(6) = 13.

Cf. A000142, A136690, A136691, A136692, A136693, A136694, A136695, A136696, A008904, A136697, A136698, A136699, A136700, A136701.

a(n) = {d = digits(n!, 16); k = #d; while (!d[k] && (k!=1), k--); d[k];} \\ Michel Marcus, Sep 21 2016

A136693 Final nonzero digit of n! in base 6.

Original entry on oeis.org

1, 1, 2, 1, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2

Offset: 0

Carl R. White, Jan 16 2008

			6! = 720 decimal = 3200 senary, so a(6) = 2.

Cf. A000142, A136690, A136691, A136692, A136694, A136695, A136696, A008904, A136697, A136698, A136699, A136700, A136701, A136702.

nzd6[n_]:=Module[{c=IntegerExponent[n!,6]},IntegerDigits[n!,6] [[-(c+1)]]]; Array[nzd6,100,0] (* Harvey P. Dale, Sep 02 2015 *)

A136700 Final nonzero digit of n! in base 14.

Original entry on oeis.org

1, 1, 2, 6, 10, 8, 6, 10, 10, 6, 4, 2, 10, 4, 4, 4, 8, 10, 12, 4, 10, 8, 8, 2, 6, 10, 8, 6, 12, 12, 10, 2, 8, 12, 2, 12, 12, 10, 2, 8, 12, 2, 6, 6, 12, 8, 4, 6, 8, 2, 2, 4, 12, 6, 2, 12, 6, 6, 12, 8, 4, 6, 8, 8, 8, 2, 6, 10, 8, 6, 2, 2, 4, 12, 6, 2, 12, 10, 10, 6, 4, 2, 10, 4, 10, 10, 6, 4, 2, 10, 4

Offset: 0

Carl R. White, Jan 16 2008

			6! = 720 decimal = 396 quatridecimal, so a(6) = 6.

Cf. A000142, A136690, A136691, A136692, A136693, A136694, A136695, A136696, A008904, A136697, A136698, A136699, A136701, A136702.

A136759 a(n) = leading digit of n! in base 8.

Original entry on oeis.org

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

Offset: 0

Carl R. White, Jan 21 2008

Robert Israel, Table of n, a(n) for n = 0..10000

Cf. A000142, A136695, A136754, A136755, A136756, A136757, A136758, A136760, A008905, A136761, A136762, A136763, A136764, A136765, A136766.

f:= proc(n) local v; v:= n!; floor(v/8^floor(ilog2(v)/3)) end proc:
map(f, [$1..100]); # Robert Israel, Jun 07 2018

Array[IntegerDigits[#!, 8][[1]]&, 100, 0] (* Vincenzo Librandi, Jun 07 2018 *)

a(n) = digits(n!, 8)[1]; \\ Michel Marcus, Jan 27 2015

A136769 n! never ends in this many 0's in base 8.

Original entry on oeis.org

4, 9, 20, 25, 30, 41, 62, 83, 84, 89, 94, 105, 110, 115, 126, 147, 168, 169, 190, 211, 222, 227, 232, 243, 248, 253, 254, 275, 296, 307, 312, 317, 328, 333, 338, 339, 340, 345, 350, 361, 366, 371, 382, 403, 424, 425, 430, 435, 446, 451, 456, 467, 488, 509, 510

Offset: 1

Carl R. White, Jan 21 2008

Cf. A000142, A136759, A136695.

Cf. A000966, A055938, A096346, A136767, A136768, A136770, A136771, A136772, A136773, A136774.

cp's OEIS Frontend

A136702 Final nonzero digit of n! in base 16.

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A136693 Final nonzero digit of n! in base 6.

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A136700 Final nonzero digit of n! in base 14.

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A136759 a(n) = leading digit of n! in base 8.

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A136769 n! never ends in this many 0's in base 8.

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