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!)
A215646 n * (11*n^2 + 6*n + 1) / 6. 2
0, 3, 19, 59, 134, 255, 433, 679, 1004, 1419, 1935, 2563, 3314, 4199, 5229, 6415, 7768, 9299, 11019, 12939, 15070, 17423, 20009, 22839, 25924, 29275, 32903, 36819, 41034, 45559, 50405, 55583, 61104, 66979, 73219, 79835, 86838, 94239, 102049, 110279, 118940 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

For n > 0: sums of rows of triangle in A215631.

LINKS

Table of n, a(n) for n=0..40.

PROG

(Haskell)

a215646 n = n * (n * (11*n + 6) + 1) `div` 6

(Maxima) A215646(n):=n*(11*n^2+6*n+1)/6$

makelist(A215646(n), n, 0, 20); /* Martin Ettl, Nov 12 2012 */

CROSSREFS

Sequence in context: A337648 A164132 A106875 * A182353 A012863 A269156

Adjacent sequences:  A215643 A215644 A215645 * A215647 A215648 A215649

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 11 2012

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 June 15 04:47 EDT 2021. Contains 345043 sequences. (Running on oeis4.)