The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A008597

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A008597

Multiples of 15.
(history; published version)

#46 by N. J. A. Sloane at Tue Apr 18 07:03:02 EDT 2017

LINKS

INRIA Algorithms Project, <a href="http://algoecs.inria.fr/ecsservices/ecsstructure?searchType=1&service=Search&searchTermsnbr=327">Encyclopedia of Combinatorial Structures 327</a>

Discussion

Tue Apr 18

07:03

OEIS Server: https://oeis.org/edit/global/2632

#45 by Alois P. Heinz at Wed Nov 16 06:02:16 EST 2016

STATUS

proposed

approved

#44 by Joerg Arndt at Wed Nov 16 05:36:11 EST 2016

STATUS

editing

proposed

#43 by Joerg Arndt at Wed Nov 16 05:36:06 EST 2016

COMMENTS

a(n) is the sum of the first 5 multiples of n. - Miquel Cerda, Nov 15 2016

FORMULA

a(n) = 15*n = 2*a(n-1) - a(n-2) = n*1/2*(5^2+5). - Miquel Cerda, Nov 15 2016

STATUS

proposed

editing

#42 by Jon E. Schoenfield at Tue Nov 15 21:40:48 EST 2016

STATUS

editing

proposed

#41 by Jon E. Schoenfield at Tue Nov 15 21:40:45 EST 2016

FORMULA

a(n) = 15*n = 2*a(n-1) - a(n-2) = n*1/2*(5^2+5). - Miquel Cerda, Nov 15 2016

AUTHOR

N. J. A. Sloane.

STATUS

proposed

editing

#40 by Miquel Cerda at Tue Nov 15 16:18:29 EST 2016

STATUS

editing

proposed

#39 by Miquel Cerda at Tue Nov 15 15:59:51 EST 2016

COMMENTS

a(n) is the sum of the first 5 multiples of n. - Miquel Cerda, Nov 15 2016

FORMULA

a(n) = 15*n = 2*a(n-1)-a(n-2) = n*1/2*(5^2+5). - Miquel Cerda, Nov 15 2016

STATUS

approved

editing

#38 by Charles R Greathouse IV at Thu Sep 24 11:51:15 EDT 2015

STATUS

editing

approved

#37 by Charles R Greathouse IV at Thu Sep 24 11:51:12 EDT 2015

PROG

(PARI) a(n)=15*n \\ Charles R Greathouse IV, Sep 24 2015

STATUS

approved

editing