login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A278238 a(n) = A278233(A000695(n)) = A278233(n)^2. 4
1, 4, 4, 16, 16, 36, 4, 64, 36, 144, 4, 144, 4, 36, 64, 256, 256, 900, 4, 1296, 16, 36, 36, 576, 4, 36, 144, 144, 36, 576, 4, 1024, 36, 2304, 36, 3600, 4, 36, 144, 5184, 4, 144, 36, 144, 576, 900, 4, 2304, 36, 36, 1024, 144, 36, 3600, 4, 576, 144, 900, 4, 5184, 4, 36, 144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..256

Index entries for sequences computed from exponents in factorization of n

Index entries for sequences operating on polynomials in ring GF(2)[X]

FORMULA

a(n) = A278233(A000695(n)).

a(n) = A278233(n)^2.

PROG

(Scheme) (define (A278238 n) (A278233 (A000695 n)))

CROSSREFS

Cf. A048720, A000695, A278233, A278239, A278254.

Sequence in context: A264039 A196064 A220761 * A218522 A303072 A231839

Adjacent sequences:  A278235 A278236 A278237 * A278239 A278240 A278241

KEYWORD

nonn

AUTHOR

Antti Karttunen, Nov 17 2016, with the second formula added Nov 20 2016.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 07:39 EDT 2021. Contains 348048 sequences. (Running on oeis4.)