[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A002097
Numbers that are not the sum of 3 nonzero triangular numbers.
7
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 WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 7 00:48 EST 2024. Contains 377523 sequences.
License Agreements, Terms of Use, Privacy Policy