19917

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0)=3, a(1)=9.at n=17A022408
• Numbers k such that 271*2^k-1 is prime.at n=8A050894
• L-th order palindromes with L > 2.at n=10A089381
• Number of car parking assignments of n cars in n spaces, if one car does not park.at n=4A140647
• Numbers k such that k^6 - 2 and k^6 + 2 are both primes.at n=29A154938
• Numbers n with property that average digit of n^2 is s=7.at n=16A164773
• a(n) is the limiting term of the n-th column of the triangle in A188919.at n=21A188920
• Maximum of the partition function on the set of all partitions of n minus the number of partitions of n.at n=24A239314
• Number T(n,k) of defective parking functions of length n and defect k; triangle T(n,k), n>=0, 0<=k<=max(0,n-1), read by rows.at n=17A264902
• Expansion of Product_{k>=2} (1 + x^k)^k.at n=21A298598
• Terms k of A228058 such that gcd(k - A048250(k), A162296(k) - k) = A162296(k) - k.at n=31A325376
• Expansion of e.g.f. (1/x) * Series_Reversion( x * exp(-3*x/(1-x)) ).at n=4A390106