login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A283483 Sums of distinct nonzero terms of A003462: a(n) = Sum_{k>=0} A030308(n,k)*A003462(1+k). 2
0, 1, 4, 5, 13, 14, 17, 18, 40, 41, 44, 45, 53, 54, 57, 58, 121, 122, 125, 126, 134, 135, 138, 139, 161, 162, 165, 166, 174, 175, 178, 179, 364, 365, 368, 369, 377, 378, 381, 382, 404, 405, 408, 409, 417, 418, 421, 422, 485, 486, 489, 490, 498, 499, 502, 503, 525, 526, 529, 530, 538, 539, 542, 543, 1093, 1094, 1097, 1098, 1106, 1107, 1110, 1111 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Indexing starts from zero, with a(0) = 0.

LINKS

Table of n, a(n) for n=0..71.

FORMULA

a(n) = Sum_{i=0..A070939(n)} A030308(n,i)*A003462(1+i).

a(n) = A090880(A283477(n)).

Other identities. For all n >= 0:

a(2^n) = A003462(n+1).

PROG

(PARI)

A003462(n) = (3^n-1)/2;

A030308(n, k) = bittest(n, k);

A283483(n) = sum(i=0, (#binary(n)-1), A030308(n, i)*A003462(1+i));

(Scheme) (define (A283483 n) (A090880 (A283477 n)))

CROSSREFS

Cf. A000244, A003462, A005187, A030308, A070939, A090880, A283477.

Sequence in context: A003969 A132140 A102703 * A288755 A227897 A156638

Adjacent sequences:  A283480 A283481 A283482 * A283484 A283485 A283486

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 19 2017

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 May 19 17:48 EDT 2019. Contains 323395 sequences. (Running on oeis4.)