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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A002097 Numbers that are not the sum of 3 nonzero triangular numbers. 5
1, 2, 4, 6, 11, 20, 29 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A063993(a(n)) = 0. - Reinhard Zumkeller, Jul 20 2012

LINKS

Table of n, a(n) for n=1..7.

MATHEMATICA

Complement[Range[30], Union[Total/@Tuples[Accumulate[Range[8]], 3]]] (* Harvey P. Dale, Oct 06 2017 *)

CROSSREFS

Cf. A111638, A064825.

Sequence in context: A164137 A018170 A113913 * A026757 A026385 A254532

Adjacent sequences:  A002094 A002095 A002096 * A002098 A002099 A002100

KEYWORD

fini,full,nonn

AUTHOR

N. J. A. Sloane, Dan Hoey

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 February 18 00:19 EST 2019. Contains 320237 sequences. (Running on oeis4.)