55500

Appears in sequences

• Convolution of A000203 with itself.at n=49A000385
• Smallest multiple of n using only digits 0 and 5.at n=11A078244
• Successively larger 3-ball indecomposable ground-state site swaps of A084511 in concatenated decimal notation.at n=30A084512
• Successively larger 3-ball 'prime' ground-state site swaps of A084521 in concatenated decimal notation.at n=24A084522
• A129027(n)/4.at n=12A129028
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 5 and 8.at n=34A136890
• Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives numbers belonging to cycles, including fixed points.at n=11A165076
• Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives numbers belonging to cycles of length greater than 1.at n=10A165078
• Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives least elements of each cycle, including fixed points.at n=4A165080
• Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives least elements of each cycle of length > 1.at n=3A165082
• Consider the base-7 Kaprekar map x->K(x) described in A165071. Sequence gives the smallest number that belongs to a cycle of length n under repeated iteration of this map, or -1 if there is no cycle of length n.at n=5A165086
• Smallest member of cycle corresponding to n-th term of A165087.at n=4A165088
• Numbers whose decimal expansion contains only 0's and 5's.at n=28A169964
• 26-gonal pyramidal numbers: a(n) = n*(n+1)*(8*n-7)/2.at n=24A256646
• a(n) = n*(n + 1)*(n^2 - n + 3)/6.at n=24A257055
• Expansion of Product_{k>=1} 1/(1 - x^prime(k))^2.at n=47A298436
• G.f. A(x) satisfies: A(x) = (1 + x * A(x)^2) / (1 - x + 2 * x^2).at n=9A346505