33949

Appears in sequences

• Dirichlet convolution of b_n=2^(n-1) with Fibonacci numbers.at n=15A034734
• Number of partitions of n into parts not of the form 25k, 25k+6 or 25k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=41A036005
• Semiprimes in A054567.at n=28A113692
• Triangle read by rows. T(n, k) = A356265(n, k) + A357078(n, k) for 0 <= k <= n.at n=50A357079
• Semiprimes k such that k+4, k+6, k+9, k+10 and k+14 are also semiprimes.at n=10A360666
• Numbers k such that A361338(k) = 10.at n=12A361349
• Numbers k such that k + 4, k + 6, k + 9, k + 10, and k + 14 are all semiprimes, where 4, 6, 9, 10, 14 are the first 5 semiprimes.at n=27A365240
• Stellated octagon numbers: a(n) = 20*n^2 + 8*n + 1.at n=41A381196