30243

Appears in sequences

• a(n) = Sum_{k >= 1} floor(2*tau^(n-k)).at n=18A020957
• Triangle in A059032 read by rows from left to right.at n=32A059033
• Triangle in A059032 read by rows in natural order.at n=32A059034
• Numbers k such that (k+j) mod (2+j) = 1 for j from 0 to 8 and (k+9) mod 11 <> 1.at n=10A096026
• Number of partitions of n having exactly 1 part that appears exactly once.at n=50A116596
• Sums of 4 distinct primorials.at n=19A177709
• L.g.f.: Sum_{n>=1} (x^n/n) / Product_{d|n} (1 - n*x^d/d).at n=9A198305
• G.f. satisfies: A(x) = 1/(1 - x/A(-x*A(x)^4)).at n=9A213225
• Numbers n such that the arithmetic derivative of A276086(n) is prime.at n=36A328233
• Numbers obtained by reinterpreting base-2 representation of odd numbers in primorial base.at n=41A328462
• Sorted positions of first appearances in the run-compression (A037201) of the first differences (A001223) of the prime numbers (A000040).at n=42A376521