This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A353193 #10 Jun 22 2022 20:27:42 %S A353193 1,5,6,8,9,10,13,14,15,18,22,23,24,27,31,32,36,37,39,40,41,44,48,49, %T A353193 53,54,56,57,58,62,63,65,66,67,70,71,72,75,79,80,84,85,87,88,89,93,94, %U A353193 96,97,98,101,102,103,106,110,111,113,114,115,118,119,120,123,127,128,129,132,136,137,141,142,144 %N A353193 The row numbers of the Trithoff (tribonacci) array that don't correspond to difference sequences of other rows of the Trithoff array. %C A353193 All positive tribonacci-like sequences are in the Trithoff array. %C A353193 Every tribonacci-like sequence s is a difference sequence of another tribonacci-like sequence t, where t is uniquely defined. If s is an integer sequence then, t doesn't have to be an integer sequence. If t is an integer sequence, then the row number corresponding to sequence s is not in this sequence. %C A353193 These are the Trithoff array rows that repeat a pattern: even, even, odd, odd. %e A353193 The first row of the Trithoff array is the sequence of tribonacci numbers A000073. Its differences form sequence A001590, which is the second row of the Trithoff array. Thus, 2 is not in this sequence. %e A353193 The tribonacci sequence, the first row of the Trithoff array, is the difference sequence of the tribonacci-like sequence A000213 divided by 2. The result is not an integer sequence. Thus, 1 is in this sequence. %Y A353193 Complement of A353178. %Y A353193 Cf. A000073, A000213, A001590, A136175. %K A353193 nonn %O A353193 1,2 %A A353193 _Tanya Khovanova_ and PRIMES STEP Senior group, Apr 29 2022