24668

Appears in sequences

• Dirichlet convolution of 3^(n-1) with Catalan numbers.at n=9A034755
• Largest achievable determinant of a 3 X 3 matrix whose elements are 9 distinct nonnegative integers chosen from the range 0..n.at n=18A097401
• a(0) = 0, a(1) = 1, a(2) = 1, a(3) = 2, a(4) = 4, for n>3: a(n+1) = SORT[a(n) + a(n-1) + a(n-2) + a(n-3)], where SORT places digits in ascending order and deletes 0's.at n=38A108564
• a(n) + a(n+1) + a(n+2) = n^3.at n=43A152728
• Number n such that the sum of its proper evil divisors (A001969) equals n.at n=38A230587
• Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001011.at n=18A261551
• Sequence shifts left three places under Weigh transform with a(n) = signum(n) for n<3.at n=27A316075