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A278862 Numbers that are not the sum of 2 or fewer terms from A057890. 1
157441, 177617, 178637, 226891, 374359, 900745, 1456223, 1526983, 1545227, 1817999, 2232815, 2274595, 2320643, 2336935, 2363383, 2404487, 2461559, 2536595, 2812451, 2877463, 2893769, 2910811, 2912446, 3046915, 3053999, 3090575, 3105319, 3382141 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Not known to be infinite. This list is complete up to 3,500,000.
LINKS
Aayush Rajasekaran, Jeffrey Shallit, and Tim Smith, Sums of Palindromes: an Approach via Nested-Word Automata, preprint arXiv:1706.10206 [cs.FL], June 30 2017.
MAPLE
# with A a list of terms < 2^d of A057890
B:= Array(0..2^d-1, datatype=integer[4]):
for a in A do B[a]:= 1 od:
C:= SignalProcessing:-Convolution(B, B):
select(t -> C[t+1] < 0.5, [$0..2^d-1]); # Robert Israel, Dec 08 2016
CROSSREFS
Cf. A057890.
Sequence in context: A274364 A258073 A245681 * A250595 A253311 A253659
KEYWORD
nonn
AUTHOR
Jeffrey Shallit, Dec 07 2016
STATUS
approved

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Last modified June 12 21:26 EDT 2024. Contains 373360 sequences. (Running on oeis4.)