99428

Appears in sequences

• Smallest positive number that requires n iterations of f(k) to reach a single digit, where f(k) is the product of the two numbers formed from the alternating digits of k.at n=16A087473
• Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.at n=17A219940
• Number of (n+7)X10 0..1 matrices with each 8X8 subblock idempotent.at n=4A224592
• Number of (n+7)X12 0..1 matrices with each 8X8 subblock idempotent.at n=2A224594
• T(n,k)=Number of (n+7)X(k+7) 0..1 matrices with each 8X8 subblock idempotent.at n=23A224597
• T(n,k)=Number of (n+7)X(k+7) 0..1 matrices with each 8X8 subblock idempotent.at n=25A224597
• Numbers k such that k, k+1 and k+2 have exactly 4 distinct prime factors.at n=31A364309