940896

Appears in sequences

• Triangle of labeled mobiles (circular rooted trees) with n nodes and k leaves.at n=42A055349
• Number of labeled mobiles (circular rooted trees) with n nodes and 7 leaves.at n=1A055354
• Number of 6-ary Lyndon words of length n with trace 0 and subtrace 1 over Z_6.at n=10A074423
• Number of 6-ary Lyndon words of length n with trace 0 and subtrace 5 over Z_6.at n=10A074427
• Number of 6-ary Lyndon words of length n with trace 1 and subtrace 0 over Z_6.at n=10A074428
• Number of 6-ary Lyndon words of length n with trace 1 and subtrace 2 over Z_6.at n=10A074430
• Number of 6-ary Lyndon words of length n with trace 2 and subtrace 3 over Z_6.at n=10A074437
• Number of 6-ary Lyndon words of length n with trace 2 and subtrace 5 over Z_6.at n=10A074439
• Number of 6-ary Lyndon words of length n with trace 3 and subtrace 2 over Z_6.at n=10A074442
• Number of 6-ary Lyndon words of length n with trace 3 and subtrace 4 over Z_6.at n=10A074444
• A unitary phi reciprocal amicable number: consider two different numbers r, s which satisfy the following equation for some integer k: uphi(r) = uphi(s) = (1/k) * r * s / (r-s); or equivalently, 1/uphi(r) = 1/uphi(s) = k * (1/s - 1/r); sequence gives s numbers.at n=28A080767
• Numbers of the form (6^i)*(11^j), with i, j >= 0.at n=28A108698
• Numbers which can be expressed as the product of numbers made of only sixs.at n=33A161144
• Continued fraction expansion for exp( Sum_{n>=1} 1/(n*A087799(n)) ), where A087799(n) = (5+sqrt(24))^n + (5-sqrt(24))^n.at n=11A174503
• a(n) = (n+2)! * Sum_{k=1..n} 1/k.at n=7A180218
• Powerful numbers (A001694) which can be written as the sum of two relatively prime 3-powerful numbers (A036966) different from 1.at n=23A210470
• Simple continued fraction expansion of product {n >= 0} {1 - sqrt(m)*[sqrt(m) - sqrt(m-1)]^(4*n+3)}/{1 - sqrt(m)*[sqrt(m) - sqrt(m-1)]^(4*n+1)} at m = 3.at n=21A221074
• Simple continued fraction expansion of product {k >= 0} (1 - 2*(N - sqrt(N^2-1))^(4*k+3))/(1 - 2*(N - sqrt(N^2-1))^(4*k+1)) at N = 5.at n=11A221195
• The smaller of a pair of successive powerful numbers (A001694) without any prime number between them.at n=43A240591
• a(n) = Product_{j=1..n, k=1..n} (j^4 + k^4 + n^4).at n=2A368721