280609

Appears in sequences

• Coefficients of tribonacci numbers expansion : similar to the Fibonacci number expansion given in Steve Roman's Umbral Calculus.at n=40A137431
• Triangle T, read by rows, where column k of T = column 0 of matrix power T^(k+1) for k>0, with column 0 of T = unsigned column 0 of T^-1 (shifted).at n=37A152400
• Column 1 of triangle A152400; also, column 1 of square array A152405.at n=7A152401
• Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions {m*(m+1)/2, m>=0} and then taking partial sums, starting with all 1's in row 0.at n=37A152405