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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

User: Jake Lawrence

Jake Lawrence's wiki page.

Jake Lawrence has authored 1 sequences.

A282232 a(n) = ((3*n + 1)^6 - 1)/9.

Original entry on oeis.org

0, 455, 13072, 111111, 536312, 1864135, 5227320, 12597767, 27126736, 53543367, 98611520, 171644935, 285080712, 455111111, 702373672, 1052699655, 1537920800, 2196734407, 3075626736, 4229854727, 5724486040, 7635497415, 10050931352, 13072111111, 16814914032, 21411103175, 27009717280
Offset: 0

Author

Jake Lawrence, Mar 05 2017

Keywords

Comments

If n is in the sequence, then so is n followed by q ones, where q is congruent to 0 mod 6. For example, 13072 is a term, so 13072111111 is also.

Examples

			a(2) =81*2^6 + 162*2^5 + 135*2^4 + 60*2^3 + 15*2^2 + 2*2 = 13072.
		

Programs

  • Maple
    f:=n->((3*n+1)^6-1)/9; [seq(f(n),n=0..30)];

Extensions

Edited by N. J. A. Sloane, Mar 07 2017