109461

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+13).at n=19A015883
• n*(1+3*n+6*n^2)/2.at n=33A115519
• Concatenation of the decimal digits of Fibonacci(n) and the Fibonacci(n)-th digit of Pi.at n=21A201773
• a(n) is the number of regions into which three-dimensional Euclidean space is divided by n-1 planes parallel to each face of a regular tetrahedron with edge length n, dividing the edges into unit segments.at n=30A364401