A132743 Powers appearing in A132416.

1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 5, 2, 3, 3, 3, 5, 9, 4, 3, 5, 4, 5, 5, 13, 6, 7, 5, 9, 5, 6, 5, 7, 17, 9, 7, 8, 13, 8, 9, 21, 11, 7, 10, 9, 25, 9, 11, 10, 13, 17, 9, 12, 11, 9, 29

Offset

1,10

Links

Table of n, a(n) for n=1..55.

Formula

a(n)=log(mod(A132416(n),10),A132416(n)); d^a(n)=A132416(n) where d is the last digit of A132416(n), d=A132416(n) mod 10.

Example

a(10)=2 because A132416(10)=25 the last digit of which is 5 and 5^2=25;
a(11)=5 because A132416(11)=32 the last digit of which is 2 and 2^5=32;
a(13)=3 because A132416(13)=64 the last digit of which is 4 and 4^3=64.

Mathematica

a[n_]:=Log[Mod[A132416[n], 10], A132416[n]]

Crossrefs

Cf. A132416.

Sequence in context: A134486 A088006 A078311 * A192885 A246904 A199611

Adjacent sequences: A132740 A132741 A132742 * A132744 A132745 A132746

Keyword

nonn,base

Author

Zak Seidov, Nov 17 2007

Status

approved