74533

Appears in sequences

• Diagonal sums of "correlation triangle" for 2^n.at n=15A115217
• Beach-Williams Pell numbers of type k^2 + 4.at n=18A212083
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) - b(n-2) - 2, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A294565
• a(0) = 0, and for n > 0, (a(n)) gives the indices n for which d(n) < d(k) for k < n, where d is the difference sequence of (cos k + sin k).at n=38A299640