60494

Appears in sequences

• (a(2n+1)+a(2n))^2 = a(2n+1) a(2n) (concatenated, not multiplied).at n=31A112268
• Left part of the square of the n-th Kaprekar number.at n=20A194218
• n-th derivative of x^(x^(x^(x^(x^x)))) at x=1.at n=7A211205
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=19A293406
• a(n) = n*(n + 1)*(16*n - 1)/6.at n=28A304659