A278862 Numbers that are not the sum of 2 or fewer terms from A057890.

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

Offset: 1

Author

Jeffrey Shallit, Dec 07 2016

Keywords

• nonn

Comments

Not known to be infinite. This list is complete up to 3,500,000.

Links

• Robert Israel, Table of n, a(n) for n = 1..262
• 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.

Crossrefs

Cf. A057890.

Programs

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