21442

Appears in sequences

• Integers 1 through n written in primorial base, summed as if decimal.at n=41A122613
• Numbers k such that Sum_{i=1..k} i^7 divides Product_{i=1..k} i^7.at n=21A166607
• Number of partitions of n such that 2*(least part) < greatest part.at n=36A237820
• Number of partitions p of n such that (sum of parts with multiplicity 1) > (sum of all other parts).at n=41A240451
• Number of partitions p of n such that (sum of parts with multiplicity 1) >= (sum of all other parts).at n=41A240452
• Number of (n+2)X(1+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=6A255084
• Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=0A255090
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=21A255091
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=27A255091
• Numbers k such that (148*10^k - 1)/3 is prime.at n=24A274331
• Numbers that are the sum of seven fourth powers in six or more ways.at n=31A345572
• Numbers that are the sum of seven fourth powers in exactly six ways.at n=23A345828
• Expansion of Sum_{k>0} x^(4*k)/(1+x^k)^5.at n=27A363618
• Smallest starting x which reaches the Antihydra halting condition for the first time at 3*n+1 terms of the iteration x -> floor(3*x/2).at n=22A385150